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Annotation of 43BSDReno/share/doc/usd/23.meref/ref.me, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1986 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted
        !             5: .\" provided that the above copyright notice and this paragraph are
        !             6: .\" duplicated in all such forms and that any documentation,
        !             7: .\" advertising materials, and other materials related to such
        !             8: .\" distribution and use acknowledge that the software was developed
        !             9: .\" by the University of California, Berkeley.  The name of the
        !            10: .\" University may not be used to endorse or promote products derived
        !            11: .\" from this software without specific prior written permission.
        !            12: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            13: .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            14: .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            15: .\"
        !            16: .\"    @(#)ref.me      6.4 (Berkeley) 7/17/89
        !            17: .\"
        !            18: .UC 7
        !            19: .ll 6.5i
        !            20: .lt 6.5i
        !            21: .pn 0
        !            22: .ds MO 2.27\"          \" mod number
        !            23: .de TL                 \" *** title line
        !            24: .lp
        !            25: .di XX
        !            26: ..
        !            27: .de DE                 \" *** description
        !            28: \\\\h'|\\n(DIu'\\\\c
        !            29: .br
        !            30: .di
        !            31: .in +\\n(DIu
        !            32: .ti 0
        !            33: .cu 1000
        !            34: .XX
        !            35: .rm XX
        !            36: .cu 0
        !            37: ..
        !            38: .ds N \s-1NROFF\s0
        !            39: .ds T \s-1TROFF\s0
        !            40: .nr DI 1.5i
        !            41: \".he '\-ME REFERENCE MANUAL''%'
        !            42: .de NR
        !            43: .b "\en\\$1" "\\$2"
        !            44: ..
        !            45: .de ST
        !            46: .b "\e*\\$1" "\\$2"
        !            47: ..
        !            48: .sc
        !            49: .eh 'USD:23-%''\-me Reference Manual'
        !            50: .oh '\-me Reference Manual''USD:23-%'
        !            51: .+c
        !            52: .ce 20
        !            53: .sz 14
        !            54: .b "\-ME REFERENCE MANUAL"
        !            55: .sz
        !            56: .sp
        !            57: .i "Release \*(MO"
        !            58: .sp 2
        !            59: .ul
        !            60: Eric P. Allman*
        !            61: .(f
        !            62: *Author's current address:
        !            63: Britton Lee, Inc.,
        !            64: 1919 Addison Suite 105,
        !            65: Berkeley, California 94704.
        !            66: .)f
        !            67: .sp
        !            68: Project INGRES
        !            69: Electronics Research Laboratory
        !            70: University of California, Berkeley
        !            71: Berkeley, California  94720
        !            72: .ce 0
        !            73: .sp 4
        !            74: .pp
        !            75: This document describes
        !            76: in extremely terse form
        !            77: the features
        !            78: of the
        !            79: .b \-me
        !            80: macro package
        !            81: for version seven \*N/\*T\*(dg.
        !            82: .(f
        !            83: \(dg\*N and \*T may be trademarks of AT&T Bell Laboratories.
        !            84: .)f
        !            85: Some familiarity is assumed
        !            86: with
        !            87: those programs.
        !            88: Specifically,
        !            89: the reader should understand
        !            90: breaks,
        !            91: fonts,
        !            92: pointsizes,
        !            93: the use and definition of number registers
        !            94: and strings,
        !            95: how to define macros,
        !            96: and scaling factors for ens, points,
        !            97: .b v 's
        !            98: (vertical line spaces),
        !            99: etc.
        !           100: .pp
        !           101: For a more casual introduction
        !           102: to text processing
        !           103: using \*N,
        !           104: refer to the document
        !           105: .ul
        !           106: Writing Papers with \*N using \-me.
        !           107: .pp
        !           108: There are a number of macro parameters
        !           109: that may be adjusted.
        !           110: Fonts may be set to a font number only.
        !           111: Font 8 means bold font in \*T;
        !           112: in \*N font 8
        !           113: is underlined
        !           114: unless the
        !           115: .b \-rb3
        !           116: flag is specified to use
        !           117: .q "true bold"
        !           118: font
        !           119: (most versions of \*N do not interpret bold font nicely).
        !           120: Font 0 is no font change;
        !           121: the font of the surrounding text
        !           122: is used instead.
        !           123: Notice that fonts 0 and 8 are
        !           124: .q pseudo-fonts ;
        !           125: that is,
        !           126: they are simulated by the macros.
        !           127: This means that although it is legal to set a font register
        !           128: to zero or eight,
        !           129: it is not legal to use the escape character form,
        !           130: such as:
        !           131: .(b
        !           132: \ef8
        !           133: .)b
        !           134: .pp
        !           135: All distances
        !           136: are in basic units,
        !           137: so it is nearly always necessary
        !           138: to use a scaling factor.
        !           139: For example,
        !           140: the request
        !           141: to set the paragraph indent
        !           142: to eight one-en spaces is:
        !           143: .(b
        !           144: \&.nr pi 8n
        !           145: .)b
        !           146: and not
        !           147: .(b
        !           148: \&.nr pi 8
        !           149: .)b
        !           150: which would set the paragraph indent to eight basic units,
        !           151: or about 0.02 inch.
        !           152: Default parameter values are given in brackets
        !           153: in the remainder of this document.
        !           154: .pp
        !           155: Registers and strings
        !           156: of the form
        !           157: .b $ \c
        !           158: .i x
        !           159: may be used in expressions
        !           160: but should not be changed.
        !           161: Macros of the form
        !           162: .b $ \c
        !           163: .i x
        !           164: perform some function
        !           165: (as described)
        !           166: and may be redefined
        !           167: to change this function.
        !           168: This may be a sensitive operation;
        !           169: look at the body of the original macro
        !           170: before changing it.
        !           171: .pp
        !           172: All names in \-me
        !           173: follow a rigid naming convention.
        !           174: The user may define number registers,
        !           175: strings,
        !           176: and macros,
        !           177: provided that s/he
        !           178: uses single character upper case names
        !           179: or double character names
        !           180: consisting of letters and digits,
        !           181: with at least one upper case letter.
        !           182: In no case should special characters
        !           183: be used in user-defined names.
        !           184: .pp
        !           185: On daisy wheel type printers
        !           186: in twelve pitch,
        !           187: the
        !           188: .b \-rx1
        !           189: flag can be stated to make lines default to
        !           190: one eighth inch
        !           191: (the normal spacing for a newline in twelve-pitch).
        !           192: This is normally too small for easy readability,
        !           193: so the default is to space one sixth inch.
        !           194: .pp
        !           195: The
        !           196: .b \-rv2
        !           197: flag will indicates that this
        !           198: .i is
        !           199: being output on a C/A/T
        !           200: phototypesetter;
        !           201: this changes the page offset
        !           202: and inserts cut marks.
        !           203: .pp
        !           204: This documentation was
        !           205: .if n \*N'ed
        !           206: .if t \*T'ed
        !           207: on \*(td
        !           208: and applies to version
        !           209: \*(MO
        !           210: of the \-me macros.
        !           211: .sh 1 "Paragraphing"
        !           212: .pp
        !           213: These macros are used
        !           214: to begin paragraphs.
        !           215: The standard paragraph macro
        !           216: is
        !           217: .b .pp ;
        !           218: the others are all variants
        !           219: to be used for special purposes.
        !           220: .pp
        !           221: The first call to one of the paragraphing macros
        !           222: defined in this section
        !           223: or the
        !           224: .b .sh
        !           225: macro
        !           226: (defined in the next session)
        !           227: .i initializes
        !           228: the macro processor.
        !           229: After initialization
        !           230: it is not possible to use any of the following requests:
        !           231: .b .sc ,
        !           232: .b .lo ,
        !           233: .b .th ,
        !           234: or
        !           235: .b .ac .
        !           236: Also,
        !           237: the effects of changing parameters
        !           238: which will have a global effect
        !           239: on the format of the page
        !           240: (notably page length and header and footer margins)
        !           241: are not well defined
        !           242: and should be avoided.
        !           243: .TL
        !           244: .b .lp
        !           245: .DE
        !           246: Begin left-justified paragraph.
        !           247: Centering and underlining
        !           248: are turned off if they were on,
        !           249: the font is set to
        !           250: .NR (pf
        !           251: [1]
        !           252: the type size
        !           253: is set to
        !           254: .NR (pp
        !           255: [10p],
        !           256: and a
        !           257: .NR (ps
        !           258: space is inserted
        !           259: before the paragraph
        !           260: [0.35v in \*T, 1v or 0.5v in \*N
        !           261: depending on device resolution].
        !           262: The indent is reset
        !           263: to
        !           264: .NR ($i
        !           265: [0]
        !           266: plus
        !           267: .NR (po
        !           268: [0]
        !           269: unless the paragraph
        !           270: is inside a display.
        !           271: (see
        !           272: .b .ba ).
        !           273: At least
        !           274: the first two lines
        !           275: of the paragraph
        !           276: are kept together
        !           277: on a page.
        !           278: .TL
        !           279: .b .pp
        !           280: .DE
        !           281: Like
        !           282: .b .lp ,
        !           283: except that it puts
        !           284: .NR (pi
        !           285: [5n]
        !           286: units of indent.
        !           287: This is the standard paragraph macro.
        !           288: .TL
        !           289: .b .ip
        !           290: .i T
        !           291: .i I
        !           292: .DE
        !           293: Indented paragraph
        !           294: with hanging tag.
        !           295: The body of the following paragraph
        !           296: is indented
        !           297: .i I
        !           298: spaces
        !           299: (or
        !           300: .NR (ii
        !           301: [5n]
        !           302: spaces
        !           303: if
        !           304: .i I
        !           305: is not specified)
        !           306: more than a non-indented paragraph
        !           307: (such as with
        !           308: .b .pp )
        !           309: is.
        !           310: The title
        !           311: .i T
        !           312: is exdented (opposite of indented).
        !           313: The result is a paragraph
        !           314: with an even left edge
        !           315: and
        !           316: .i T
        !           317: printed in the margin.
        !           318: Any spaces in
        !           319: .i T
        !           320: must be unpaddable.
        !           321: If
        !           322: .i T
        !           323: will not fit in the space provided,
        !           324: .b .ip
        !           325: will start a new line.
        !           326: .TL
        !           327: .b .np
        !           328: .DE
        !           329: A variant of .ip which numbers paragraphs.
        !           330: Numbering is reset
        !           331: after a
        !           332: .b .lp ,
        !           333: .b .pp ,
        !           334: or
        !           335: .b .sh .
        !           336: The current paragraph number
        !           337: is in
        !           338: .NR ($p .
        !           339: .TL
        !           340: .b .bu
        !           341: .DE
        !           342: Like
        !           343: .b .np
        !           344: except that paragraphs are marked with bullets (\(bu).
        !           345: Leading space is eliminated to create compact lists.
        !           346: .sh 1 "Section Headings"
        !           347: .pp
        !           348: Numbered sections
        !           349: are similar to paragraphs
        !           350: except that a
        !           351: section number
        !           352: is automatically
        !           353: generated for each one.
        !           354: The section numbers are of the form
        !           355: .b 1.2.3 .
        !           356: The
        !           357: .i depth
        !           358: of the section
        !           359: is the count of numbers
        !           360: (separated by decimal points)
        !           361: in the section number.
        !           362: .pp
        !           363: Unnumbered section headings are similar,
        !           364: except that no number is attached
        !           365: to the heading.
        !           366: .TL
        !           367: .b .sh
        !           368: .i +N
        !           369: .i T
        !           370: .i "a b c d e f"
        !           371: .DE
        !           372: Begin numbered section
        !           373: of depth
        !           374: .i N .
        !           375: If
        !           376: .i N
        !           377: is missing
        !           378: the current depth
        !           379: (maintained in
        !           380: the number register
        !           381: .NR ($0 )
        !           382: is used.
        !           383: The values of
        !           384: the individual parts of the section number
        !           385: are maintained in
        !           386: .NR ($1
        !           387: through
        !           388: .NR ($6 .
        !           389: There is a
        !           390: .NR (ss
        !           391: [1v]
        !           392: space before the section.
        !           393: .i T
        !           394: is printed
        !           395: as a section title
        !           396: in font
        !           397: .NR (sf
        !           398: [8]
        !           399: and size
        !           400: .NR (sp
        !           401: [10p].
        !           402: The
        !           403: .q name
        !           404: of the section may be accessed via
        !           405: .ST ($n .
        !           406: If
        !           407: .NR (si
        !           408: is non-zero,
        !           409: the base indent
        !           410: is set to
        !           411: .NR (si
        !           412: times the section depth,
        !           413: and the section title
        !           414: is exdented.
        !           415: (See
        !           416: .b .ba .)
        !           417: Also,
        !           418: an additional indent of
        !           419: .NR (so
        !           420: [0]
        !           421: is added to the section title
        !           422: (but not to the body of the section).
        !           423: The font is then set
        !           424: to the paragraph font,
        !           425: so that more information may occur
        !           426: on the line
        !           427: with the section number
        !           428: and title.
        !           429: .b .sh
        !           430: insures that there is enough room
        !           431: to print the section head
        !           432: plus the beginning of a paragraph
        !           433: (about 3 lines total).
        !           434: If
        !           435: .i a
        !           436: through
        !           437: .i f
        !           438: are specified,
        !           439: the section number is set to that number
        !           440: rather than incremented automatically.
        !           441: If any of
        !           442: .i a
        !           443: through
        !           444: .i f
        !           445: are a hyphen
        !           446: that number is not reset.
        !           447: If
        !           448: .i T
        !           449: is a single underscore
        !           450: (\c
        !           451: .q _ )
        !           452: then the section depth and numbering is reset,
        !           453: but the base indent is not reset
        !           454: and nothing is printed out.
        !           455: This is useful to automatically
        !           456: coordinate section numbers with
        !           457: chapter numbers.
        !           458: .TL
        !           459: .b .sx
        !           460: .i +N
        !           461: .DE
        !           462: Go to section depth
        !           463: .i N
        !           464: [\c
        !           465: .b \-1 ],
        !           466: but do not print the number
        !           467: and title,
        !           468: and do not increment the section number
        !           469: at level
        !           470: .i N .
        !           471: This has the effect
        !           472: of starting a new paragraph
        !           473: at level
        !           474: .i N .
        !           475: .TL
        !           476: .b .uh
        !           477: .i T
        !           478: .DE
        !           479: Unnumbered section heading.
        !           480: The title
        !           481: .i T
        !           482: is printed
        !           483: with the same rules for spacing,
        !           484: font, etc.,
        !           485: as for
        !           486: .b .sh .
        !           487: .TL
        !           488: .b .$p
        !           489: .i T
        !           490: .i B
        !           491: .i N
        !           492: .DE
        !           493: Print section heading.
        !           494: May be redefined
        !           495: to get fancier headings.
        !           496: .i T
        !           497: is the title passed on the
        !           498: .b .sh
        !           499: or
        !           500: .b .uh
        !           501: line;
        !           502: .i B
        !           503: is the section number for this section,
        !           504: and
        !           505: .i N
        !           506: is the depth of this section.
        !           507: These parameters are not always present;
        !           508: in particular,
        !           509: .b .sh
        !           510: passes all three,
        !           511: .b .uh
        !           512: passes only the first,
        !           513: and
        !           514: .b .sx
        !           515: passes three,
        !           516: but the first two
        !           517: are null strings.
        !           518: Care should be taken if this macro
        !           519: is redefined;
        !           520: it is quite complex and subtle.
        !           521: .TL
        !           522: .b .$0
        !           523: .i T
        !           524: .i B
        !           525: .i N
        !           526: .DE
        !           527: This macro is called automatically
        !           528: after every call to
        !           529: .b .$p .
        !           530: It is normally undefined,
        !           531: but may be used
        !           532: to automatically put
        !           533: every section title
        !           534: into the table of contents
        !           535: or for some similar function.
        !           536: .i T
        !           537: is the section title
        !           538: for the section title which was just printed,
        !           539: .i B
        !           540: is the section number,
        !           541: and
        !           542: .i N
        !           543: is the section depth.
        !           544: .TL
        !           545: .b .$1
        !           546: \-
        !           547: .b .$6
        !           548: .DE
        !           549: Traps called just before printing that depth section.
        !           550: May be defined to
        !           551: (for example)
        !           552: give variable spacing
        !           553: before sections.
        !           554: These macros are called from
        !           555: .b .$p ,
        !           556: so if you redefine that macro
        !           557: you may lose this feature.
        !           558: .sh 1 "Headers and Footers"
        !           559: .ds TP \fI\(aal\|\(aam\^\(aar\^\(aa\fP
        !           560: .pp
        !           561: Headers and footers
        !           562: are put at the top and bottom
        !           563: of every page
        !           564: automatically.
        !           565: They are set in font
        !           566: .NR (tf
        !           567: [3]
        !           568: and size
        !           569: .NR (tp
        !           570: [10p].
        !           571: Each of the definitions
        !           572: apply as of the
        !           573: .i next
        !           574: page.
        !           575: Three-part titles
        !           576: must be quoted
        !           577: if there are two blanks adjacent
        !           578: anywhere in the title
        !           579: or more than eight blanks total.
        !           580: .pp
        !           581: The spacing
        !           582: of headers and footers
        !           583: are controlled by three number registers.
        !           584: .NR (hm
        !           585: [4v]
        !           586: is the distance from the top of the page
        !           587: to the top of the header,
        !           588: .NR (fm
        !           589: [3v]
        !           590: is the distance from the bottom of the page
        !           591: to the bottom of the footer,
        !           592: .NR (tm
        !           593: [7v]
        !           594: is the distance from the top of the page
        !           595: to the top of the text,
        !           596: and
        !           597: .NR (bm
        !           598: [6v]
        !           599: is the distance from the bottom of the page
        !           600: to the bottom of the text
        !           601: (nominal).
        !           602: The macros
        !           603: .b .m1 ,
        !           604: .b .m2 ,
        !           605: .b .m3 ,
        !           606: and
        !           607: .b .m4
        !           608: are also supplied for compatibility
        !           609: with
        !           610: \s-1ROFF\s0 documents.
        !           611: .TL
        !           612: .b .he
        !           613: \*(TP
        !           614: .DE
        !           615: Define three-part header,
        !           616: to be printed on the top
        !           617: of every page.
        !           618: .TL
        !           619: .b .fo
        !           620: \*(TP
        !           621: .DE
        !           622: Define footer,
        !           623: to be printed at the bottom
        !           624: of every page.
        !           625: .TL
        !           626: .b .eh
        !           627: \*(TP
        !           628: .DE
        !           629: Define header,
        !           630: to be printed at the top of every
        !           631: even-numbered page.
        !           632: .TL
        !           633: .b .oh
        !           634: \*(TP
        !           635: .DE
        !           636: Define header,
        !           637: to be printed at the top of every
        !           638: odd-numbered page.
        !           639: .TL
        !           640: .b .ef
        !           641: \*(TP
        !           642: .DE
        !           643: Define footer,
        !           644: to be printed at the bottom
        !           645: of every even-numbered page.
        !           646: .TL
        !           647: .b .of
        !           648: \*(TP
        !           649: .DE
        !           650: Define footer,
        !           651: to be printed at the bottom
        !           652: of every odd-numbered page.
        !           653: .TL
        !           654: .b .hx
        !           655: .DE
        !           656: Suppress headers and footers
        !           657: on the next page.
        !           658: .TL
        !           659: .b .m1
        !           660: .i +N
        !           661: .DE
        !           662: Set the space between the top of the page
        !           663: and the header
        !           664: [4v].
        !           665: .TL
        !           666: .b .m2
        !           667: .i +N
        !           668: .DE
        !           669: Set the space between the header
        !           670: and the first line of text
        !           671: [2v].
        !           672: .TL
        !           673: .b .m3
        !           674: .i +N
        !           675: .DE
        !           676: Set the space
        !           677: between the bottom of the text
        !           678: and the footer
        !           679: [2v].
        !           680: .TL
        !           681: .b .m4
        !           682: .i +N
        !           683: .DE
        !           684: Set the space
        !           685: between the footer
        !           686: and the bottom of the page
        !           687: [4v].
        !           688: .TL
        !           689: .b .ep
        !           690: .DE
        !           691: End this page,
        !           692: but do not begin the next page.
        !           693: Useful for forcing out footnotes,
        !           694: but other than
        !           695: that hardly every used.
        !           696: Must be followed by a
        !           697: .b .bp
        !           698: or the end of input.
        !           699: .TL
        !           700: .b .$h
        !           701: .DE
        !           702: Called at every page
        !           703: to print the header.
        !           704: May be redefined
        !           705: to provide fancy
        !           706: (e.g.,
        !           707: multi-line)
        !           708: headers,
        !           709: but doing so
        !           710: loses the function of the
        !           711: .b .he ,
        !           712: .b .fo ,
        !           713: .b .eh ,
        !           714: .b .oh ,
        !           715: .b .ef ,
        !           716: and
        !           717: .b .of
        !           718: requests,
        !           719: as well as the chapter-style title feature
        !           720: of
        !           721: .b .+c .
        !           722: .TL
        !           723: .b .$f
        !           724: .DE
        !           725: Print footer;
        !           726: same comments apply
        !           727: as in
        !           728: .b .$h .
        !           729: .TL
        !           730: .b .$H
        !           731: .DE
        !           732: A normally undefined macro
        !           733: which is called
        !           734: at the top of each page
        !           735: (after putting out
        !           736: the header,
        !           737: initial saved floating keeps,
        !           738: etc.);
        !           739: in other words,
        !           740: this macro is called immediately before
        !           741: printing text
        !           742: on a page.
        !           743: It can be used for column headings
        !           744: and the like.
        !           745: .sh 1 "Displays"
        !           746: .pp
        !           747: All displays except centered blocks
        !           748: and block quotes
        !           749: are preceded and followed
        !           750: by an extra
        !           751: .NR (bs
        !           752: [same as
        !           753: .NR (ps ]
        !           754: space.
        !           755: Quote spacing is stored in a separate register;
        !           756: centered blocks have no default initial or trailing space.
        !           757: The vertical spacing of all displays except quotes
        !           758: and centered blocks
        !           759: is stored in register
        !           760: .NR ($R
        !           761: instead of
        !           762: .NR ($r .
        !           763: .TL
        !           764: .b .(l
        !           765: .i m
        !           766: .i f
        !           767: .DE
        !           768: Begin list.
        !           769: Lists are single spaced,
        !           770: unfilled text.
        !           771: If
        !           772: .i f
        !           773: is
        !           774: .b F ,
        !           775: the list will be filled.
        !           776: If
        !           777: .i m
        !           778: [\c
        !           779: .b I ]
        !           780: is
        !           781: .b I
        !           782: the list is indented by
        !           783: .NR (bi
        !           784: [4m];
        !           785: if
        !           786: .b M
        !           787: the list is indented to the left margin;
        !           788: if
        !           789: .b L
        !           790: the list is left justified with respect to the text
        !           791: (different from
        !           792: .b M
        !           793: only if the base indent
        !           794: (stored in
        !           795: .NR ($i
        !           796: and set with
        !           797: .b .ba )
        !           798: is not zero);
        !           799: and if
        !           800: .b C
        !           801: the list is centered on a line-by-line basis.
        !           802: The list is set in font
        !           803: .NR (df
        !           804: [0].
        !           805: Must be matched by a
        !           806: .b .)l .
        !           807: This macro is almost like
        !           808: .b .(b
        !           809: except that no attempt is made
        !           810: to keep the display on one page.
        !           811: .TL
        !           812: .b .)l
        !           813: .DE
        !           814: End list.
        !           815: .TL
        !           816: .b .(q
        !           817: .DE
        !           818: Begin major quote.
        !           819: These are single spaced,
        !           820: filled,
        !           821: moved in from the text
        !           822: on both sides
        !           823: by
        !           824: .NR (qi
        !           825: [4n],
        !           826: preceded and followed
        !           827: by
        !           828: .NR (qs
        !           829: [same as
        !           830: .NR (bs ]
        !           831: space,
        !           832: and are set in point size
        !           833: .NR (qp
        !           834: [one point smaller than surrounding text].
        !           835: .TL
        !           836: .b .)q
        !           837: .DE
        !           838: End major quote.
        !           839: .TL
        !           840: .b .(b
        !           841: .i m
        !           842: .i f
        !           843: .DE
        !           844: Begin block.
        !           845: Blocks are a form of
        !           846: .i keep ,
        !           847: where the text of a keep
        !           848: is kept together on one page
        !           849: if possible
        !           850: (keeps are useful
        !           851: for tables and figures
        !           852: which should not be broken
        !           853: over a page).
        !           854: If the block will not fit
        !           855: on the current page
        !           856: a new page is begun,
        !           857: .i unless
        !           858: that would leave more than
        !           859: .NR (bt
        !           860: [0]
        !           861: white space
        !           862: at the bottom of the text.
        !           863: If
        !           864: .NR (bt
        !           865: is zero, the threshold feature
        !           866: is turned off.
        !           867: Blocks are not filled
        !           868: unless
        !           869: .i f
        !           870: is
        !           871: .b F ,
        !           872: when they are filled.
        !           873: The block will be left-justified
        !           874: if
        !           875: .i m
        !           876: is
        !           877: .b L ,
        !           878: indented by
        !           879: .NR (bi
        !           880: [4m]
        !           881: if
        !           882: .i m
        !           883: is
        !           884: .b I
        !           885: or absent,
        !           886: centered
        !           887: (line-for-line)
        !           888: if
        !           889: .i m
        !           890: is
        !           891: .b C ,
        !           892: and left justified to the margin
        !           893: (not to the base indent)
        !           894: if
        !           895: .i m
        !           896: is
        !           897: .b M .
        !           898: The block is set in font
        !           899: .NR (df
        !           900: [0].
        !           901: .TL
        !           902: .b .)b
        !           903: .DE
        !           904: End block.
        !           905: .TL
        !           906: .b .(z
        !           907: .i m
        !           908: .i f
        !           909: .DE
        !           910: Begin floating keep.
        !           911: Like
        !           912: .b .(b
        !           913: except that the keep is
        !           914: .i floated
        !           915: to the bottom of the page
        !           916: or the top of the next page.
        !           917: Therefore,
        !           918: its position relative to the text changes.
        !           919: The floating keep is preceded and followed
        !           920: by
        !           921: .NR (zs
        !           922: [1v]
        !           923: space.
        !           924: Also,
        !           925: it defaults to mode
        !           926: .b M .
        !           927: .TL
        !           928: .b .)z
        !           929: .DE
        !           930: End floating keep.
        !           931: .TL
        !           932: .b .(c
        !           933: .DE
        !           934: Begin centered block.
        !           935: The next keep
        !           936: is centered as a block,
        !           937: rather than on a line-by-line basis
        !           938: as with
        !           939: .b ".(b C" .
        !           940: This call may be nested
        !           941: inside keeps.
        !           942: .TL
        !           943: .b .)c
        !           944: .DE
        !           945: End centered block.
        !           946: .sh 1 Annotations
        !           947: .TL
        !           948: .b .(d
        !           949: .DE
        !           950: Begin delayed text.
        !           951: Everything in the next keep
        !           952: is saved for output
        !           953: later with
        !           954: .b .pd ,
        !           955: in a manner
        !           956: similar to footnotes.
        !           957: .TL
        !           958: .b .)d
        !           959: .i n
        !           960: .DE
        !           961: End delayed text.
        !           962: The delayed text number register
        !           963: .NR ($d
        !           964: and the associated string
        !           965: .ST #
        !           966: are incremented if
        !           967: .ST #
        !           968: has been referenced.
        !           969: .TL
        !           970: .b .pd
        !           971: .DE
        !           972: Print delayed text.
        !           973: Everything diverted via
        !           974: .b .(d
        !           975: is printed and truncated.
        !           976: This might be used
        !           977: at the end of each chapter.
        !           978: .TL
        !           979: .b .(f
        !           980: .DE
        !           981: Begin footnote.
        !           982: The text of the footnote
        !           983: is floated to the bottom
        !           984: of the page
        !           985: and set in font
        !           986: .NR (ff
        !           987: [1]
        !           988: and size
        !           989: .NR (fp
        !           990: [8p].
        !           991: Each entry
        !           992: is preceded by
        !           993: .NR (fs
        !           994: [0.2v]
        !           995: space,
        !           996: is indented
        !           997: .NR (fi
        !           998: [3n]
        !           999: on the first line,
        !          1000: and is indented
        !          1001: .NR (fu
        !          1002: [0]
        !          1003: from the right margin.
        !          1004: Footnotes line up underneath
        !          1005: two column output.
        !          1006: If the text of the footnote
        !          1007: will not all fit on one page
        !          1008: it will be carried over
        !          1009: to the next page.
        !          1010: .TL
        !          1011: .b .)f
        !          1012: .i n
        !          1013: .DE
        !          1014: End footnote.
        !          1015: The number register
        !          1016: .NR ($f
        !          1017: and the associated string
        !          1018: .ST *
        !          1019: are incremented
        !          1020: if they have been referenced.
        !          1021: .TL
        !          1022: .b .$s
        !          1023: .DE
        !          1024: The macro to output the footnote separator.
        !          1025: This macro may be redefined
        !          1026: to give other size lines or other types
        !          1027: of separators.
        !          1028: Currently
        !          1029: it draws a 1.5i line.
        !          1030: .TL
        !          1031: .b .(x
        !          1032: .i x
        !          1033: .DE
        !          1034: Begin index entry.
        !          1035: Index entries are saved in the index
        !          1036: .i x
        !          1037: [\c
        !          1038: .b x ]
        !          1039: until called up with
        !          1040: .b .xp.
        !          1041: Each entry is preceded
        !          1042: by a
        !          1043: .NR (xs
        !          1044: [0.2v]
        !          1045: space.
        !          1046: Each entry is
        !          1047: .q undented
        !          1048: by
        !          1049: .NR (xu
        !          1050: [0.5i];
        !          1051: this register tells how far the page number
        !          1052: extends into the right margin.
        !          1053: .TL
        !          1054: .b .)x
        !          1055: .i P
        !          1056: .i A
        !          1057: .DE
        !          1058: End index entry.
        !          1059: The index entry
        !          1060: is finished with a row of dots
        !          1061: with
        !          1062: .i A
        !          1063: [null]
        !          1064: right justified on the last line
        !          1065: (such as for an author's name),
        !          1066: followed by P
        !          1067: [\c
        !          1068: .NR % ].
        !          1069: If
        !          1070: .i A
        !          1071: is specified,
        !          1072: .i P
        !          1073: must be specified;
        !          1074: .NR %
        !          1075: can be used to print the current page number.
        !          1076: If
        !          1077: .i P
        !          1078: is an underscore,
        !          1079: no page number
        !          1080: and no row of dots
        !          1081: are printed.
        !          1082: .TL
        !          1083: .b .xp
        !          1084: .i x
        !          1085: .DE
        !          1086: Print index
        !          1087: .i x
        !          1088: [\c
        !          1089: .b x ].
        !          1090: The index is formatted in the font, size, and so forth
        !          1091: in effect at the time it is printed,
        !          1092: rather than at the time it is collected.
        !          1093: .sh 1 "Columned Output"
        !          1094: .TL
        !          1095: .b .2c
        !          1096: .i +S
        !          1097: .i N
        !          1098: .DE
        !          1099: Enter two-column mode.
        !          1100: The column separation is set to
        !          1101: .i +S
        !          1102: [4n, 0.5i in ACM mode]
        !          1103: (saved in
        !          1104: .NR ($s ).
        !          1105: The column width,
        !          1106: calculated to fill the single column line length
        !          1107: with both columns,
        !          1108: is stored in
        !          1109: .NR ($l .
        !          1110: The current column
        !          1111: is in
        !          1112: .NR ($c .
        !          1113: You can test register
        !          1114: .NR ($m
        !          1115: [1]
        !          1116: to see if you are in single column
        !          1117: or double column mode.
        !          1118: Actually,
        !          1119: the request enters
        !          1120: .i N
        !          1121: [2]
        !          1122: column output.
        !          1123: .TL
        !          1124: .b .1c
        !          1125: .DE
        !          1126: Revert to single-column mode.
        !          1127: .TL
        !          1128: .b .bc
        !          1129: .DE
        !          1130: Begin column.
        !          1131: This is like
        !          1132: .b .bp
        !          1133: except that it begins a new column
        !          1134: on a new page
        !          1135: only if necessary,
        !          1136: rather than forcing a whole new page
        !          1137: if there is another column left
        !          1138: on the current page.
        !          1139: .sh 1 "Fonts and Sizes"
        !          1140: .TL
        !          1141: .b .sz
        !          1142: .i +P
        !          1143: .DE
        !          1144: The pointsize is set to
        !          1145: .i P
        !          1146: [10p],
        !          1147: and the line spacing is set proportionally.
        !          1148: The ratio of line spacing to pointsize
        !          1149: is stored in
        !          1150: .NR ($r .
        !          1151: The ratio used internally
        !          1152: by displays and annotations
        !          1153: is stored in
        !          1154: .NR ($R
        !          1155: (although this is not used by
        !          1156: .b .sz ).
        !          1157: This size is
        !          1158: .i not
        !          1159: sticky beyond many macros:
        !          1160: in particular,
        !          1161: .NR (pp
        !          1162: (paragraph pointsize)
        !          1163: modifies the pointsize every time a new paragraph is begun
        !          1164: using the
        !          1165: .b \&.pp ,
        !          1166: .b \&.lp ,
        !          1167: .b \&.ip ,
        !          1168: .b \&.np ,
        !          1169: or
        !          1170: .b \&.bu
        !          1171: macros.
        !          1172: Also,
        !          1173: .NR (fp
        !          1174: (footnote pointsize),
        !          1175: .NR (qp
        !          1176: (quote pointsize),
        !          1177: .NR (sp
        !          1178: (section header pointsize),
        !          1179: and
        !          1180: .NR (tp
        !          1181: (title pointsize)
        !          1182: may modify the pointsize.
        !          1183: .TL
        !          1184: .b .r
        !          1185: .i W
        !          1186: .i X
        !          1187: .DE
        !          1188: Set
        !          1189: .i W
        !          1190: in roman font,
        !          1191: appending
        !          1192: .i X
        !          1193: in the previous font.
        !          1194: To append different font requests,
        !          1195: use
        !          1196: .i X
        !          1197: =
        !          1198: .b \ec .
        !          1199: If no parameters,
        !          1200: change to roman font.
        !          1201: .TL
        !          1202: .b .i
        !          1203: .i W
        !          1204: .i X
        !          1205: .DE
        !          1206: Set
        !          1207: .i W
        !          1208: in italics,
        !          1209: appending
        !          1210: .i X
        !          1211: in the previous font.
        !          1212: If no parameters,
        !          1213: change to italic font.
        !          1214: Underlines in \*N.
        !          1215: .TL
        !          1216: .b .b
        !          1217: .i W
        !          1218: .i X
        !          1219: .DE
        !          1220: Set
        !          1221: .i W
        !          1222: in bold font
        !          1223: and append
        !          1224: .i X
        !          1225: in the previous font.
        !          1226: If no parameters,
        !          1227: switch to bold font.
        !          1228: In \*N,
        !          1229: underlines.
        !          1230: .TL
        !          1231: .b .rb
        !          1232: .i W
        !          1233: .i X
        !          1234: .DE
        !          1235: Set
        !          1236: .i W
        !          1237: in bold font
        !          1238: and append
        !          1239: .i X
        !          1240: in the previous font.
        !          1241: If no parameters,
        !          1242: switch to bold font.
        !          1243: .b .rb
        !          1244: differs from
        !          1245: .b .b
        !          1246: in that
        !          1247: .b .rb
        !          1248: does not underline in \*N.
        !          1249: .TL
        !          1250: .b .u
        !          1251: .i W
        !          1252: .i X
        !          1253: .DE
        !          1254: Underline
        !          1255: .i W
        !          1256: and append
        !          1257: .i X .
        !          1258: This is a true underlining,
        !          1259: as opposed to the
        !          1260: .b .ul
        !          1261: request,
        !          1262: which changes to
        !          1263: .q "underline font"
        !          1264: (usually italics in \*T).
        !          1265: It won't work right
        !          1266: if
        !          1267: .i W
        !          1268: is spread or broken (including hyphenated).
        !          1269: In other words,
        !          1270: it is safe in nofill mode only.
        !          1271: .TL
        !          1272: .b .q
        !          1273: .i W
        !          1274: .i X
        !          1275: .DE
        !          1276: Quote
        !          1277: .i W
        !          1278: and append
        !          1279: .i X .
        !          1280: In \*N
        !          1281: this just surrounds
        !          1282: .i W
        !          1283: with double quote marks
        !          1284: (`\|\c
        !          1285: .b """" \|'),
        !          1286: but in \*T
        !          1287: uses directed quotes.
        !          1288: .TL
        !          1289: .b .bi
        !          1290: .i W
        !          1291: .i X
        !          1292: .DE
        !          1293: Set
        !          1294: .i W
        !          1295: in bold italics
        !          1296: and append
        !          1297: .i X .
        !          1298: Actually,
        !          1299: sets
        !          1300: .i W
        !          1301: in italic
        !          1302: and overstrikes once.
        !          1303: Underlines in \*N.
        !          1304: It won't work right
        !          1305: if
        !          1306: .i W
        !          1307: is spread or broken (including hyphenated).
        !          1308: In other words,
        !          1309: it is safe in nofill mode only.
        !          1310: .TL
        !          1311: .b .bx
        !          1312: .i W
        !          1313: .i X
        !          1314: .DE
        !          1315: Sets
        !          1316: .i W
        !          1317: in a box,
        !          1318: with
        !          1319: .i X
        !          1320: appended.
        !          1321: Underlines in \*N.
        !          1322: It won't work right
        !          1323: if
        !          1324: .i W
        !          1325: is spread or broken (including hyphenated).
        !          1326: In other words,
        !          1327: it is safe in nofill mode only.
        !          1328: .TL
        !          1329: .b sm
        !          1330: .i W
        !          1331: .i X
        !          1332: .DE
        !          1333: Sets
        !          1334: .i W
        !          1335: in a smaller pointsize,
        !          1336: with
        !          1337: .i X
        !          1338: appended.
        !          1339: .sh 1 "Roff Support"
        !          1340: .TL
        !          1341: .b .ix
        !          1342: .i +N
        !          1343: .DE
        !          1344: Indent,
        !          1345: no break.
        !          1346: Equivalent to
        !          1347: .b \(aain
        !          1348: .i N .
        !          1349: .TL
        !          1350: .b .bl
        !          1351: .i N
        !          1352: .DE
        !          1353: Leave
        !          1354: .i N
        !          1355: contiguous white space,
        !          1356: on the next page if not enough room
        !          1357: on this page.
        !          1358: Equivalent to a
        !          1359: .b .sp
        !          1360: .i N
        !          1361: inside a block.
        !          1362: .TL
        !          1363: .b .pa
        !          1364: .i +N
        !          1365: .DE
        !          1366: Equivalent to
        !          1367: .b .bp .
        !          1368: .TL
        !          1369: .b .ro
        !          1370: .DE
        !          1371: Set page number
        !          1372: in roman numerals.
        !          1373: Equivalent to
        !          1374: .b ".af % i" .
        !          1375: .TL
        !          1376: .b .ar
        !          1377: .DE
        !          1378: Set page number in Arabic.
        !          1379: Equivalent to
        !          1380: .b ".af % 1" .
        !          1381: .TL
        !          1382: .b .n1
        !          1383: .DE
        !          1384: Number lines in margin from one
        !          1385: on each page.
        !          1386: .TL
        !          1387: .b .n2
        !          1388: .i N
        !          1389: .DE
        !          1390: Number lines from
        !          1391: .i N ,
        !          1392: stop if
        !          1393: .i N
        !          1394: = 0.
        !          1395: .TL
        !          1396: .b .sk
        !          1397: .DE
        !          1398: Leave the next output page blank,
        !          1399: except for headers and footers.
        !          1400: This is used to leave space
        !          1401: for a full-page diagram
        !          1402: which is produced externally
        !          1403: and pasted in later.
        !          1404: To get a partial-page paste-in display,
        !          1405: say
        !          1406: .b .sv \ \c
        !          1407: .i N ,
        !          1408: where
        !          1409: .i N
        !          1410: is the amount of space
        !          1411: to leave;
        !          1412: this space will be output immediately
        !          1413: if there is room,
        !          1414: and will otherwise be output
        !          1415: at the top of the next page.
        !          1416: However, be warned:
        !          1417: if
        !          1418: .i N
        !          1419: is greater than the amount of available space
        !          1420: on an empty page,
        !          1421: no space will ever be output.
        !          1422: .sh 1 "Preprocessor Support"
        !          1423: .TL
        !          1424: .b .EQ
        !          1425: .i m
        !          1426: .i T
        !          1427: .DE
        !          1428: Begin equation.
        !          1429: The equation is centered
        !          1430: if
        !          1431: .i m
        !          1432: is
        !          1433: .b C
        !          1434: or omitted,
        !          1435: indented
        !          1436: .NR (bi
        !          1437: [4m]
        !          1438: if
        !          1439: .i m
        !          1440: is
        !          1441: .b I ,
        !          1442: and left justified if
        !          1443: .i m
        !          1444: is
        !          1445: .b L .
        !          1446: .i T
        !          1447: is a title printed on the right margin
        !          1448: next to the equation.
        !          1449: See
        !          1450: .i "Typesetting Mathematics \- User's Guide"
        !          1451: by Brian W. Kernighan
        !          1452: and Lorinda L. Cherry.
        !          1453: .TL
        !          1454: .b .EN
        !          1455: .i c
        !          1456: .DE
        !          1457: End equation.
        !          1458: If
        !          1459: .i c
        !          1460: is
        !          1461: .b C
        !          1462: the equation must be continued
        !          1463: by immediately following
        !          1464: with another
        !          1465: .b .EQ ,
        !          1466: the text of which
        !          1467: can be centered
        !          1468: along with this one.
        !          1469: Otherwise,
        !          1470: the equation is printed,
        !          1471: always on one page,
        !          1472: with
        !          1473: .NR (es
        !          1474: [0.5v in \*T, 1v in \*N]
        !          1475: space
        !          1476: above and below it.
        !          1477: .TL
        !          1478: .b .TS
        !          1479: .i h
        !          1480: .DE
        !          1481: Table start.
        !          1482: Tables are single spaced
        !          1483: and kept on one page
        !          1484: if possible.
        !          1485: If you have a large table
        !          1486: which will not fit on one page,
        !          1487: use
        !          1488: .i h
        !          1489: =
        !          1490: .b H
        !          1491: and follow the header part
        !          1492: (to be printed on every page of the table)
        !          1493: with a
        !          1494: .b .TH .
        !          1495: See
        !          1496: .i "Tbl \- A Program to Format Tables"
        !          1497: by M. E. Lesk.
        !          1498: .TL
        !          1499: .b .TH
        !          1500: .DE
        !          1501: With
        !          1502: .b ".TS H" ,
        !          1503: ends the header portion of the table.
        !          1504: .TL
        !          1505: .b .TE
        !          1506: .DE
        !          1507: Table end.
        !          1508: Note that this table
        !          1509: does not float,
        !          1510: in fact,
        !          1511: it is not even guaranteed to stay on one page
        !          1512: if you use requests such as
        !          1513: .b .sp
        !          1514: intermixed with the text
        !          1515: of the table.
        !          1516: If you want it to float
        !          1517: (or if you use requests
        !          1518: inside the table),
        !          1519: surround the entire table
        !          1520: (including the
        !          1521: .b .TS
        !          1522: and
        !          1523: .b .TE
        !          1524: requests)
        !          1525: with the requests
        !          1526: .b .(z
        !          1527: and
        !          1528: .b .)z .
        !          1529: .TL
        !          1530: .b .PS
        !          1531: .i h
        !          1532: .i w
        !          1533: .DE
        !          1534: Begin
        !          1535: .i pic
        !          1536: picture.
        !          1537: .i H
        !          1538: is the height and
        !          1539: .i w
        !          1540: is the width,
        !          1541: both in basic units.
        !          1542: .i Ditroff
        !          1543: only.
        !          1544: .TL
        !          1545: .b .PE
        !          1546: .DE
        !          1547: End picture.
        !          1548: .TL
        !          1549: .b .IS
        !          1550: .DE
        !          1551: Begin
        !          1552: .i ideal
        !          1553: picture.
        !          1554: .TL
        !          1555: .b .IE
        !          1556: .DE
        !          1557: End
        !          1558: .i ideal
        !          1559: picture.
        !          1560: .TL
        !          1561: .b .IF
        !          1562: .DE
        !          1563: End
        !          1564: .i ideal
        !          1565: picture (alternate form).
        !          1566: .TL
        !          1567: .b GS
        !          1568: .DE
        !          1569: Begin
        !          1570: .i gremlin
        !          1571: picture.
        !          1572: .TL
        !          1573: .b GE
        !          1574: .DE
        !          1575: End
        !          1576: .i gremlin
        !          1577: picture.
        !          1578: .TL
        !          1579: .b GF
        !          1580: .DE
        !          1581: End
        !          1582: .i gremlin
        !          1583: picture (alternate form).
        !          1584: .sh 1 "Miscellaneous"
        !          1585: .TL
        !          1586: .b .re
        !          1587: .DE
        !          1588: Reset tabs.
        !          1589: Set to every 0.5i
        !          1590: in \*T
        !          1591: and every 0.8i in \*N.
        !          1592: .TL
        !          1593: .b .ba
        !          1594: .i +N
        !          1595: .DE
        !          1596: Set the base indent
        !          1597: to
        !          1598: .i +N
        !          1599: [0]
        !          1600: (saved in
        !          1601: .NR ($i ).
        !          1602: All paragraphs,
        !          1603: sections,
        !          1604: and displays
        !          1605: come out indented by this amount.
        !          1606: Titles and footnotes
        !          1607: are unaffected.
        !          1608: The
        !          1609: .b .sh
        !          1610: request performs a
        !          1611: .b .ba
        !          1612: request
        !          1613: if
        !          1614: .NR (si
        !          1615: [0] is not zero,
        !          1616: and sets the base indent to
        !          1617: .NR (si \c
        !          1618: .b * \c
        !          1619: .NR ($0 .
        !          1620: .TL
        !          1621: .b .xl
        !          1622: .i +N
        !          1623: .DE
        !          1624: Set the line length to
        !          1625: .i N
        !          1626: [6.0i].
        !          1627: This differs
        !          1628: from
        !          1629: .b .ll
        !          1630: because it only affects the current environment.
        !          1631: .TL
        !          1632: .b .ll
        !          1633: .i +N
        !          1634: .DE
        !          1635: Set line length in all environments
        !          1636: to
        !          1637: .i N
        !          1638: [6.0i].
        !          1639: This should not be used
        !          1640: after output has begun,
        !          1641: and particularly not in two-column output.
        !          1642: The current line length is stored in
        !          1643: .NR ($l .
        !          1644: .TL
        !          1645: .b .hl
        !          1646: .DE
        !          1647: Draws a horizontal line
        !          1648: the length of the page.
        !          1649: This is useful
        !          1650: inside floating keeps
        !          1651: to differentiate
        !          1652: between the text
        !          1653: and the figure.
        !          1654: .TL
        !          1655: .b .lh
        !          1656: .DE
        !          1657: Print a letterhead at the current position on the page.
        !          1658: The format of the letterhead must be defined
        !          1659: in the file
        !          1660: .b /usr/lib/me/letterhead.me
        !          1661: by your local systems staff.
        !          1662: Some environments may require
        !          1663: .i ditroff
        !          1664: for this macro
        !          1665: to function properly.
        !          1666: .TL
        !          1667: .b .lo
        !          1668: .DE
        !          1669: This macro loads another set of macros
        !          1670: (in
        !          1671: .b /usr/lib/me/local.me )
        !          1672: which is intended to be a set of locally defined macros.
        !          1673: These macros
        !          1674: should all be of the form
        !          1675: .b .* \c
        !          1676: .i X ,
        !          1677: where
        !          1678: .i X
        !          1679: is any letter
        !          1680: (upper or lower case)
        !          1681: or digit.
        !          1682: .sh 1 "Standard Papers"
        !          1683: .TL
        !          1684: .b .tp
        !          1685: .DE
        !          1686: Begin title page.
        !          1687: Spacing at the top of the page
        !          1688: can occur,
        !          1689: and headers and footers are suppressed.
        !          1690: Also,
        !          1691: the page number
        !          1692: is not incremented
        !          1693: for this page.
        !          1694: .TL
        !          1695: .b .th
        !          1696: .DE
        !          1697: Set thesis mode.
        !          1698: This defines the modes acceptable
        !          1699: for a doctoral dissertation
        !          1700: at Berkeley.
        !          1701: It double spaces,
        !          1702: defines the header
        !          1703: to be a single page number,
        !          1704: and changes the margins
        !          1705: to be 1.5 inch on the left
        !          1706: and one inch on the top.
        !          1707: .b .++
        !          1708: and
        !          1709: .b .+c
        !          1710: should be used with it.
        !          1711: This macro must be stated
        !          1712: before
        !          1713: initialization,
        !          1714: that is,
        !          1715: before the first call of a paragraphing
        !          1716: macro
        !          1717: or
        !          1718: .b .sh .
        !          1719: .TL
        !          1720: .b .++
        !          1721: .i m
        !          1722: .i H
        !          1723: .DE
        !          1724: This request defines the section of the paper
        !          1725: which we are entering.
        !          1726: The section type is defined by
        !          1727: .i m .
        !          1728: .b C
        !          1729: means that we are entering the chapter portion
        !          1730: of the paper,
        !          1731: .b A
        !          1732: means that we are entering the appendix portion
        !          1733: of the paper,
        !          1734: .b P
        !          1735: means that the material following
        !          1736: should be the preliminary portion
        !          1737: (abstract, table of contents, etc.)
        !          1738: portion of the paper,
        !          1739: .b AB
        !          1740: means that we are entering the abstract
        !          1741: (numbered independently from 1
        !          1742: in Arabic numerals),
        !          1743: and
        !          1744: .b B
        !          1745: means that we are entering the bibliographic
        !          1746: portion at the end of the paper.
        !          1747: Also, the variants
        !          1748: .b RC
        !          1749: and
        !          1750: .b RA
        !          1751: are allowed,
        !          1752: which specify renumbering of pages
        !          1753: from one at the beginning of each
        !          1754: chapter or appendix,
        !          1755: respectively.
        !          1756: The
        !          1757: .i H
        !          1758: parameter defines the new header.
        !          1759: If there are any spaces in it,
        !          1760: the entire header must be quoted.
        !          1761: If you want the header to have the chapter number
        !          1762: in it,
        !          1763: Use the string
        !          1764: .b "\e\e\e\en(ch" .
        !          1765: For example, to number appendixes
        !          1766: .b A.1
        !          1767: etc.,
        !          1768: type
        !          1769: .b ".++ RA \(aa\(aa\(aa\e\e\e\en(ch.%\(aa" .
        !          1770: Each section
        !          1771: (chapter, appendix, etc.)
        !          1772: should be preceded by the
        !          1773: .b .+c
        !          1774: request.
        !          1775: It should be mentioned
        !          1776: that it is easier when using
        !          1777: \*T to put the front material
        !          1778: at the end of the paper,
        !          1779: so that the table of contents
        !          1780: can be collected and put out;
        !          1781: this material can then be physically
        !          1782: moved to the beginning of the paper.
        !          1783: .TL
        !          1784: .b .+c
        !          1785: .i T
        !          1786: .DE
        !          1787: Begin chapter with title
        !          1788: .i T .
        !          1789: The chapter number
        !          1790: is maintained in
        !          1791: .NR (ch .
        !          1792: This register is incremented
        !          1793: every time
        !          1794: .b .+c
        !          1795: is called with a parameter.
        !          1796: The title and chapter number
        !          1797: are printed by
        !          1798: .b .$c .
        !          1799: The header is moved to the footer
        !          1800: on the first page
        !          1801: of each chapter.
        !          1802: If
        !          1803: .i T
        !          1804: is omitted,
        !          1805: .b .$c
        !          1806: is not called;
        !          1807: this is useful for doing your own
        !          1808: .q "title page"
        !          1809: at the beginning of papers
        !          1810: without a title page proper.
        !          1811: .b .$c
        !          1812: calls
        !          1813: .b .$C
        !          1814: as a hook so that chapter titles can be inserted
        !          1815: into a table of contents automatically.
        !          1816: The footnote numbering is reset to one.
        !          1817: .TL
        !          1818: .b .$c
        !          1819: .i T
        !          1820: .DE
        !          1821: Print chapter number
        !          1822: (from
        !          1823: .NR (ch )
        !          1824: and
        !          1825: .i T .
        !          1826: This macro can be redefined to your liking.
        !          1827: It is defined by default
        !          1828: to be acceptable
        !          1829: for a PhD thesis
        !          1830: at Berkeley.
        !          1831: This macro calls
        !          1832: .b $C ,
        !          1833: which can be defined to make index entries,
        !          1834: or whatever.
        !          1835: .TL
        !          1836: .b .$C
        !          1837: .i K
        !          1838: .i N
        !          1839: .i T
        !          1840: .DE
        !          1841: This macro is called by
        !          1842: .b .$c .
        !          1843: It is normally undefined,
        !          1844: but can be used to automatically insert
        !          1845: index entries,
        !          1846: or whatever.
        !          1847: .i K
        !          1848: is a keyword,
        !          1849: either
        !          1850: .q Chapter
        !          1851: or
        !          1852: .q Appendix
        !          1853: (depending on the
        !          1854: .b .++
        !          1855: mode);
        !          1856: .i N
        !          1857: is the chapter or appendix number,
        !          1858: and
        !          1859: .i T
        !          1860: is the chapter or appendix title.
        !          1861: .TL
        !          1862: .b .ac
        !          1863: .i A
        !          1864: .i N
        !          1865: .DE
        !          1866: This macro
        !          1867: (short for
        !          1868: .b .acm )
        !          1869: sets up the \*N environment
        !          1870: for camera-ready papers
        !          1871: as used by the ACM.
        !          1872: This format is 25% larger,
        !          1873: and has no headers or footers.
        !          1874: The author's name
        !          1875: .i A
        !          1876: is printed at the bottom of the page
        !          1877: (but off the part which will be printed
        !          1878: in the conference proceedings),
        !          1879: together with the current page number
        !          1880: and the total number of pages
        !          1881: .i N .
        !          1882: Additionally,
        !          1883: this macro loads the file
        !          1884: .b /usr/lib/me/acm.me ,
        !          1885: which may later be augmented with other macros
        !          1886: useful for printing papers
        !          1887: for ACM conferences.
        !          1888: It should be noted
        !          1889: that this macro will not work correctly in version 7 \*T,
        !          1890: since it sets the page length
        !          1891: wider than the physical width
        !          1892: of the C/A/T phototypesetter roll.
        !          1893: .sh 1 "Predefined Strings"
        !          1894: .TL
        !          1895: .ST *
        !          1896: .DE
        !          1897: Footnote number, actually
        !          1898: .ST [ \c
        !          1899: .NR ($f \c
        !          1900: .ST ] .
        !          1901: This macro is incremented
        !          1902: after each call to
        !          1903: .b .)f .
        !          1904: .TL
        !          1905: .ST #
        !          1906: .DE
        !          1907: Delayed text number.
        !          1908: Actually
        !          1909: [\c
        !          1910: .NR ($d ].
        !          1911: .TL
        !          1912: .ST [
        !          1913: .DE
        !          1914: Superscript.
        !          1915: This string gives upward movement
        !          1916: and a change to a smaller point size
        !          1917: if possible,
        !          1918: otherwise it gives the left bracket character
        !          1919: (`\^\c
        !          1920: .b [ \^').
        !          1921: Extra space is left above the line
        !          1922: to allow room for the superscript.
        !          1923: .TL
        !          1924: .ST ]
        !          1925: .DE
        !          1926: Unsuperscript.
        !          1927: Inverse to
        !          1928: .ST [ .
        !          1929: For example,
        !          1930: to produce a superscript
        !          1931: you might type
        !          1932: .b x \c
        !          1933: .ST [ \c
        !          1934: .b 2 \c
        !          1935: .ST ] ,
        !          1936: which will produce
        !          1937: .b x\*[2\*] .
        !          1938: .TL
        !          1939: .ST <
        !          1940: .DE
        !          1941: Subscript.
        !          1942: Defaults to
        !          1943: `\^<\^'
        !          1944: if half-carriage motion not possible.
        !          1945: Extra space is left below the line
        !          1946: to allow for the subscript.
        !          1947: .TL
        !          1948: .ST >
        !          1949: .DE
        !          1950: Inverse to
        !          1951: .ST < .
        !          1952: .TL
        !          1953: .ST (dw
        !          1954: .DE
        !          1955: The day of the week,
        !          1956: as a word.
        !          1957: .TL
        !          1958: .ST (mo
        !          1959: .DE
        !          1960: The month,
        !          1961: as a word.
        !          1962: .TL
        !          1963: .ST (td
        !          1964: .DE
        !          1965: Today's date,
        !          1966: directly printable.
        !          1967: The date is of the form \*(td.
        !          1968: Other forms of the date can be used
        !          1969: by using
        !          1970: .NR (dy
        !          1971: (the day of the month;
        !          1972: for example, \n(dy),
        !          1973: .ST (mo
        !          1974: (as noted above)
        !          1975: or
        !          1976: .NR (mo
        !          1977: (the same,
        !          1978: but as an ordinal number;
        !          1979: for example, \*(mo is \n(mo),
        !          1980: and
        !          1981: .NR (yr
        !          1982: (the last two digits of the current year).
        !          1983: .TL
        !          1984: .ST (lq
        !          1985: .DE
        !          1986: Left quote marks.
        !          1987: Double quote in \*N.
        !          1988: .TL
        !          1989: .ST (rq
        !          1990: .DE
        !          1991: Right quote.
        !          1992: .TL
        !          1993: .ST \-
        !          1994: .DE
        !          1995: .ie \w'\(34'>0 \(34
        !          1996: .el 3/4
        !          1997: em dash in \*T;
        !          1998: two hyphens in \*N.
        !          1999: .sh 1 "Special Characters and Marks"
        !          2000: .pp
        !          2001: There are a number of special characters
        !          2002: and diacritical marks
        !          2003: (such as accents)
        !          2004: available through \-me.
        !          2005: To reference these characters,
        !          2006: you must call the macro
        !          2007: .b .sc
        !          2008: to define the characters before using them.
        !          2009: .TL
        !          2010: .b .sc
        !          2011: .DE
        !          2012: Define special characters and diacritical marks, as described
        !          2013: in the remainder of this section.
        !          2014: This macro must be stated
        !          2015: before initialization.
        !          2016: The special characters available
        !          2017: are listed below.
        !          2018: .in +4n
        !          2019: .ta 15 +5 +6
        !          2020: .nf
        !          2021: Name   Usage   Example
        !          2022: Acute accent   \e*\(aa a\e*\(aa        a\*'
        !          2023: Grave accent   \e*\(ga e\e*\(ga        e\*`
        !          2024: Umlat  \e*:    u\e*:   u\*:
        !          2025: Tilde  \e*~    n\e*~   n\*~
        !          2026: Caret  \e*^    e\e*^   e\*^
        !          2027: Cedilla        \e*,    c\e*,   c\*,
        !          2028: Czech  \e*v    e\e*v   e\*v
        !          2029: Circle \e*o    A\e*o   A\*o
        !          2030: There exists   \e*(qe          \*(qe
        !          2031: For all        \e*(qa          \*(qa
        !          2032: .fi
        !          2033: .sp 1i
        !          2034: .in 0
        !          2035: .b Acknowledgments
        !          2036: .pp
        !          2037: I would like to thank
        !          2038: Bob Epstein,
        !          2039: Bill Joy,
        !          2040: and Larry Rowe
        !          2041: for having the courage
        !          2042: to use the \-me macros
        !          2043: to produce non-trivial papers
        !          2044: during the development stages;
        !          2045: Ricki Blau,
        !          2046: Pamela Humphrey,
        !          2047: and Jim Joyce
        !          2048: for their help with the documentation phase;
        !          2049: peter kessler
        !          2050: for numerous complaints,
        !          2051: most accompanied by fixes;
        !          2052: and the plethora of people who have contributed ideas
        !          2053: and have given support for the project.
        !          2054: .bp
        !          2055: .b Summary
        !          2056: .pp
        !          2057: This alphabetical list summarizes all macros, strings, and number registers
        !          2058: available in the \-me macros.
        !          2059: Selected
        !          2060: .i troff
        !          2061: commands, registers, and functions are included as well;
        !          2062: those listed can generally be used with impunity.
        !          2063: .pp
        !          2064: The columns are the name of the
        !          2065: command, macro, register, or string;
        !          2066: the type of the object,
        !          2067: and the description.
        !          2068: Types are
        !          2069: .b M
        !          2070: for macro or builtin command
        !          2071: (invoked with
        !          2072: .b \&.
        !          2073: or
        !          2074: .b \&\'
        !          2075: in the first input column),
        !          2076: .b S
        !          2077: for a string
        !          2078: (invoked with
        !          2079: .b \e*
        !          2080: or
        !          2081: .b \e*( ),
        !          2082: .b R
        !          2083: for a number register
        !          2084: (invoked with
        !          2085: .b \en
        !          2086: or
        !          2087: .b \en( ),
        !          2088: and
        !          2089: .b F
        !          2090: for a
        !          2091: .i troff
        !          2092: builtin function
        !          2093: (invoked by preceding it with a single backslash).
        !          2094: .pp
        !          2095: Lines marked with \(sc are
        !          2096: .i troff
        !          2097: internal codes.
        !          2098: Lines marked with \(dg or \(dd
        !          2099: may be defined by the user to get special functions;
        !          2100: \(dd indicates that these are defined by default
        !          2101: and changing them may have unexpected side effects.
        !          2102: Lines marked with \(de
        !          2103: are specific to
        !          2104: .i ditroff
        !          2105: (device-independent
        !          2106: .i troff ).
        !          2107: .de $H
        !          2108: .ev 1
        !          2109: .ta \w'\e(space)\(sc\ 'u +\w'TYPE  'u
        !          2110: NAME   TYPE    DESCRIPTION
        !          2111: .ev
        !          2112: ..
        !          2113: .(l
        !          2114: .$H
        !          2115: \e(space)      F\(sc   unpaddable space
        !          2116: \e"    F\(sc   comment (to end of line)
        !          2117: \e*#   S       optional delayed text tag string
        !          2118: \e$\fI\&N\fP   F\(sc   interpolate argument \fI\&N\fP
        !          2119: \en($0 R       section depth
        !          2120: \&.$0  M\(dg   invoked after section title printed
        !          2121: \en($1 R       first section number
        !          2122: \&.$1  M\(dg   invoked before printing depth 1 section
        !          2123: \en($2 R       second section number
        !          2124: \&.$2  M\(dg   invoked before printing depth 2 section
        !          2125: \en($3 R       third section number
        !          2126: \&.$3  M\(dg   invoked before printing depth 3 section
        !          2127: \en($4 R       fourth section number
        !          2128: \&.$4  M\(dg   invoked before printing depth 4 section
        !          2129: \en($5 R       fifth section number
        !          2130: \&.$5  M\(dg   invoked before printing depth 5 section
        !          2131: \en($6 R       sixth section number
        !          2132: \&.$6  M\(dg   invoked before printing depth 6 section
        !          2133: \&.$C  M\(dg   called at beginning of chapter
        !          2134: \&.$H  M\(dg   text header
        !          2135: \en($R R\(dd   relative vertical spacing in displays
        !          2136: \en($c R       current column number
        !          2137: \&.$c  M\(dd   print chapter title
        !          2138: \en($d R       delayed text number
        !          2139: \en($f R       footnote number
        !          2140: \&.$f  M\(dd   print footer
        !          2141: \&.$h  M\(dd   print header
        !          2142: \en($i R       paragraph base indent
        !          2143: \en($l R       column width
        !          2144: \en($m R       number of columns in effect
        !          2145: \e*($n S       section name
        !          2146: \en($p R       numbered paragraph number
        !          2147: \&.$p  M\(dd   print section heading (internal macro)
        !          2148: \en($r R\(dd   relative vertical spacing in text
        !          2149: \en($s R       column indent
        !          2150: \&.$s  M\(dd   footnote separator (from text)
        !          2151: \en%   R\(sc   current page number
        !          2152: \e&    F\(sc   zero width character, useful for hiding controls
        !          2153: \e(\fI\&xx\fP  F\(sc   interpolate special character \fI\&xx\fP
        !          2154: \&.(b  M       begin block
        !          2155: \&.(c  M       begin centered block
        !          2156: \&.(d  M       begin delayed text
        !          2157: \&.(f  M       begin footnote
        !          2158: \&.(l  M       begin list
        !          2159: \&.(q  M       begin quote
        !          2160: \&.(x  M       begin index entry
        !          2161: \&.(z  M       begin floating keep
        !          2162: \&.)b  M       end block
        !          2163: \&.)c  M       end centered block
        !          2164: \&.)d  M       end delayed text
        !          2165: \&.)f  M       end footnote
        !          2166: \&.)l  M       end list
        !          2167: \&.)q  M       end quote
        !          2168: \&.)x  M       end index entry
        !          2169: \&.)z  M       end floating keep
        !          2170: \e*\fI\&x\fP   F\(sc   interpolate string \fI\&x\fP
        !          2171: \e*(\fI\&xx\fP F\(sc   interpolate string \fI\&xx\fP
        !          2172: \e**   S       optional footnote tag string
        !          2173: \&.++  M       set paper section type
        !          2174: \&.+c  M       begin chapter
        !          2175: \e*,   S       cedilla
        !          2176: \e\-   F\(sc   minus sign
        !          2177: \e*\-  S       3/4 em dash
        !          2178: \e0    F\(sc   unpaddable digit-width space
        !          2179: \&.1c  M       revert to single column output
        !          2180: \&.2c  M       begin two column output
        !          2181: \e*:   S       umlat
        !          2182: \e*<   S       begin subscript
        !          2183: \e*>   S       end subscript
        !          2184: \&.EN  M       end equation
        !          2185: \&.EQ  M       begin equation
        !          2186: \eL\'\fI\&d\fP\'       F\(sc   vertical line drawing function for distance \fI\&d\fP
        !          2187: \&.GE  M\(de   end \fIgremlin\fP picture
        !          2188: \&.GF  M\(de   end \fIgremlin\fP picture (with flyback)
        !          2189: \&.GS  M\(de   start \fIgremlin\fP picture
        !          2190: \&.IE  M\(de   end \fIideal\fP picture
        !          2191: \&.IF  M\(de   end \fIideal\fP picture (with flyback)
        !          2192: \&.IS  M\(de   start \fIideal\fP picture
        !          2193: \&.PE  M\(de   end \fIpic\fP picture
        !          2194: \&.PF  M\(de   end \fIpic\fP picture (with flyback)
        !          2195: \&.PS  M\(de   start \fIpic\fP picture
        !          2196: \&.TE  M       end table
        !          2197: \&.TH  M       end header of table
        !          2198: \&.TS  M       begin table
        !          2199: \e*[   S       begin superscript
        !          2200: \en(\&.$       R\(sc   number of arguments to macro
        !          2201: \en(\&.i       R\(sc   current indent
        !          2202: \en(\&.l       R\(sc   current line length
        !          2203: \en(\&.s       R\(sc   current point size
        !          2204: \e*(\&\'       S       acute accent
        !          2205: \e*(\&\`       S       grave accent
        !          2206: \e(\'  F\(sc   acute accent
        !          2207: \e(\`  F\(sc   grave accent
        !          2208: \e*]   S       end superscript
        !          2209: \e^    F\(sc   1/12 em narrow space
        !          2210: \e*^   S       caret
        !          2211: \&.ac  M       ACM mode
        !          2212: \&.ad  M\(sc   set text adjustment
        !          2213: \&.af  M\(sc   assign format to register
        !          2214: \&.am  M\(sc   append to macro
        !          2215: \&.ar  M       set page numbers in Arabic
        !          2216: \&.as  M\(sc   append to string
        !          2217: \&.b   M       bold font
        !          2218: \&.ba  M       set base indent
        !          2219: \&.bc  M       begin new column
        !          2220: \&.bi  M       bold italic
        !          2221: \en(bi R       display (block) indent
        !          2222: \&.bl  M       blank lines (even at top of page)
        !          2223: \en(bm R       bottom title margin
        !          2224: \&.bp  M\(sc   begin page
        !          2225: \&.br  M\(sc   break (start new line)
        !          2226: \en(bs R       display (block) pre/post spacing
        !          2227: \en(bt R       block keep threshold
        !          2228: \&.bx  M       boxed
        !          2229: \ec    F\(sc   continue input
        !          2230: \&.ce  M\(sc   center lines
        !          2231: \en(ch R       current chapter number
        !          2232: \&.de  M\(sc   define macro
        !          2233: \en(df R       display font
        !          2234: \&.ds  M\(sc   define string
        !          2235: \en(dw R\(sc   current day of week
        !          2236: \e*(dw S       current day of week
        !          2237: \en(dy R\(sc   day of month
        !          2238: \ee    F\(sc   printable version of \e
        !          2239: \&.ef  M       set footer (even numbered pages only)
        !          2240: \&.eh  M       set header (even numbered pages only)
        !          2241: \&.el  M\(sc   else part of conditional
        !          2242: \&.ep  M       end page
        !          2243: \en(es R       equation pre/post space
        !          2244: \ef\fI\&f\fP   F\(sc   inline font change to font \fI\&f\fP
        !          2245: \ef(\fI\&ff\fP F\(sc   inline font change to font \fI\&ff\fP
        !          2246: \&.fc  M\(sc   set field characters
        !          2247: \en(ff R       footnote font
        !          2248: \&.fi  M\(sc   fill output lines
        !          2249: \en(fi R       footnote indent (first line only)
        !          2250: \en(fm R       footer margin
        !          2251: \&.fo  M       set footer
        !          2252: \en(fp R       footnote pointsize
        !          2253: \en(fs R       footnote prespace
        !          2254: \en(fu R       footnote undent (from right margin)
        !          2255: \eh\'\fI\&d\fP\'       F\(sc   local horizontal motion for distance \fI\&d\fP
        !          2256: \&.hc  M\(sc   set hyphenation character
        !          2257: \&.he  M       set header
        !          2258: \&.hl  M       draw horizontal line
        !          2259: \en(hm R       header margin
        !          2260: \&.hx  M       suppress headers and footers on next page
        !          2261: \&.hy  M\(sc   set hyphenation mode
        !          2262: \&.i   M       italic font
        !          2263: \&.ie  M\(sc   conditional with else
        !          2264: \&.if  M\(sc   conditional
        !          2265: \en(ii R       indented paragraph indent
        !          2266: \&.in  M\(sc   indent (transient, use .ba for pervasive)
        !          2267: \&.ip  M       begin indented paragraph
        !          2268: \&.ix  M       indent, no break
        !          2269: \el\'\fI\&d\fP\'       F\(sc   horizontal line drawing function for distance \fI\&d\fP
        !          2270: \&.lc  M\(sc   set leader repetition character
        !          2271: \&.lh  M\(de   interpolate local letterhead
        !          2272: \&.ll  M       set line length
        !          2273: \&.lo  M       load local macros
        !          2274: \&.lp  M       begin left justified paragraph
        !          2275: \e*(lq S       left quote marks
        !          2276: \&.ls  M\(sc   set multi-line spacing
        !          2277: \&.m1  M       set space from top of page to header
        !          2278: \&.m2  M       set space from header to text
        !          2279: \&.m3  M       set space from text to footer
        !          2280: \&.m4  M       set space from footer to bottom of page
        !          2281: \&.mc  M\(sc   insert margin character
        !          2282: \&.mk  M\(sc   mark vertical position
        !          2283: \en(mo R\(sc   month of year
        !          2284: \e*(mo S       current month
        !          2285: \en\fI\&x\fP   F\(sc   interpolate number register \fI\&x\fP
        !          2286: \en(\fI\&xx\fP F\(sc   interpolate number register \fI\&xx\fP
        !          2287: \&.n1  M       number lines in margin
        !          2288: \&.n2  M       number lines in margin
        !          2289: \&.na  M\(sc   turn off text adjustment
        !          2290: \&.ne  M\(sc   need vertical space
        !          2291: \&.nf  M\(sc   don't fill output lines
        !          2292: \&.nh  M\(sc   turn off hyphenation
        !          2293: \&.np  M       begin numbered paragraph
        !          2294: \&.nr  M\(sc   set number register
        !          2295: \&.ns  M\(sc   no space mode
        !          2296: \e*o   S       circle (e.g., for Norse A\*o)
        !          2297: \&.of  M       set footer (odd numbered pages only)
        !          2298: \&.oh  M       set header (odd numbered pages only)
        !          2299: \&.pa  M       begin page
        !          2300: \&.pd  M       print delayed text
        !          2301: \en(pf R       paragraph font
        !          2302: \en(pi R       paragraph indent
        !          2303: \&.pl  M\(sc   set page length
        !          2304: \&.pn  M\(sc   set next page number
        !          2305: \&.po  M\(sc   page offset
        !          2306: \en(po R       simulated page offset
        !          2307: \&.pp  M       begin paragraph
        !          2308: \en(pp R       paragraph pointsize
        !          2309: \en(ps R       paragraph prespace
        !          2310: \&.q   M       quoted
        !          2311: \e*(qa S       for all
        !          2312: \e*(qe S       there exists
        !          2313: \en(qi R       quote indent (also shortens line)
        !          2314: \en(qp R       quote pointsize
        !          2315: \en(qs R       quote pre/post space
        !          2316: \&.r   M       roman font
        !          2317: \&.rb  M       real bold font
        !          2318: \&.re  M       reset tabs
        !          2319: \&.rm  M\(sc   remove macro or string
        !          2320: \&.rn  M\(sc   rename macro or string
        !          2321: \&.ro  M       set page numbers in roman
        !          2322: \e*(rq S       right quote marks
        !          2323: \&.rr  M\(sc   remove register
        !          2324: \&.rs  M\(sc   restore spacing
        !          2325: \&.rt  M\(sc   return to vertical position
        !          2326: \es\fI\&S\fP   F\(sc   inline size change to size \fI\&S\fP
        !          2327: \&.sc  M       load special characters
        !          2328: \en(sf R       section title font
        !          2329: \&.sh  M       begin numbered section
        !          2330: \en(si R       relative base indent per section depth
        !          2331: \&.sk  M       skip next page
        !          2332: \&.sm  M       set argument in a smaller pointsize
        !          2333: \&.so  M\(sc   source input file
        !          2334: \en(so R       additional section title offset
        !          2335: \&.sp  M\(sc   vertical space
        !          2336: \en(sp R       section title pointsize
        !          2337: \en(ss R       section prespace
        !          2338: \&.sx  M       change section depth
        !          2339: \&.sz  M       set pointsize and vertical spacing
        !          2340: \&.ta  M\(sc   set tab stops
        !          2341: \&.tc  M\(sc   set tab repetition character
        !          2342: \e*(td S       today's date
        !          2343: \en(tf R       title font
        !          2344: \&.th  M       set thesis mode
        !          2345: \&.ti  M\(sc   temporary indent (next line only)
        !          2346: \&.tl  M\(sc   three part title
        !          2347: \en(tm R       top title margin
        !          2348: \&.tp  M       begin title page
        !          2349: \en(tp R       title pointsize
        !          2350: \&.tr  M\(sc   translate
        !          2351: \&.u   M       underlined
        !          2352: \&.uh  M       unnumbered section
        !          2353: \&.ul  M\(sc   underline next line
        !          2354: \ev\'\fI\&d\fP\'       F\(sc   local vertical motion for distance \fI\&d\fP
        !          2355: \e*v   S       inverted `v' for czeck ``e\*v''
        !          2356: \ew\'\fI\&S\fP\'       F\(sc   return width of string \fI\&S\fP
        !          2357: \&.xl  M       set line length (local)
        !          2358: \&.xp  M       print index
        !          2359: \en(xs R       index entry prespace
        !          2360: \en(xu R       index undent (from right margin)
        !          2361: \en(yr R\(sc   year (last two digits only)
        !          2362: \en(zs R       floating keep pre/post space
        !          2363: \e{    F\(sc   begin conditional group
        !          2364: \e|    F\(sc   1/6 em narrow space
        !          2365: \e}    F\(sc   end conditional group
        !          2366: \e*~   S       tilde
        !          2367: .)l
        !          2368: .rm $H

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