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Annotation of 43BSDReno/share/doc/usd/28.tbl/tbl, revision 1.1

1.1     ! root        1: .\"    @(#)tbl 6.1 (Berkeley) 5/22/86
        !             2: .\"
        !             3: .EH 'USD:28-%''Tbl \(em A Program to Format Tables'
        !             4: .OH 'Tbl \(em A Program to Format Tables''USD:28-%'
        !             5: .if \nM=1 .RP
        !             6: \" .TM 76-1274-5 39199 39199-11
        !             7: .if \n(tm>0 .ND June 11, 1976*
        !             8: .TL
        !             9: Tbl \(em A Program to Format Tables
        !            10: .AU "MH 2C-569" 6377
        !            11: M. E. Lesk
        !            12: .AI
        !            13: .MH
        !            14: .if \n(tm>0 .FS
        !            15: .if \n(tm>0 * This printing revised through August 5, 1977
        !            16: .if \n(tm>0 .FE
        !            17: .AB
        !            18: .I
        !            19: Tbl
        !            20: .R
        !            21: is a document formatting preprocessor for
        !            22: .I
        !            23: troff
        !            24: .R
        !            25: or
        !            26: .I
        !            27: nroff
        !            28: .R
        !            29: which makes
        !            30: even
        !            31: fairly complex tables easy to specify and enter.
        !            32: It is available on
        !            33: the
        !            34: .SM
        !            35: .UX
        !            36: .NL
        !            37: system
        !            38: and on Honeywell 6000
        !            39: .SM
        !            40: GCOS.
        !            41: .NL
        !            42: Tables are made up of columns which may be independently centered, right-adjusted,
        !            43: left-adjusted, or aligned by decimal points.
        !            44: Headings may be placed over single columns or groups of columns.
        !            45: A table entry may contain equations, or may consist of several rows of text.
        !            46: Horizontal or vertical lines may be drawn as desired
        !            47: in the table,
        !            48: and any table or element may be enclosed in a box.
        !            49: For example:
        !            50: .in 0
        !            51: .ll
        !            52: .sp .5
        !            53: .TS
        !            54: center, box;
        !            55: c  s  s  s
        !            56: c  s  s  s
        !            57: c |c |c |c
        !            58: c |c |c |c
        !            59: l |n |n |n.
        !            60: 1970 Federal Budget Transfers
        !            61: \s-2(in billions of dollars)\s0
        !            62: =
        !            63: State  Taxes   Money   Net
        !            64: \^     collected       spent   \^
        !            65: _
        !            66: New York       22.91   21.35   \-1.56
        !            67: New Jersey     8.33    6.96    \-1.37
        !            68: Connecticut    4.12    3.10    \-1.02
        !            69: Maine  0.74    0.67    \-0.07
        !            70: California     22.29   22.42   +0.13
        !            71: New Mexico     0.70    1.49    +0.79
        !            72: Georgia        3.30    4.28    +0.98
        !            73: Mississippi    1.15    2.32    +1.17
        !            74: Texas  9.33    11.13   +1.80
        !            75: .TE
        !            76: .AE
        !            77: .OK
        !            78: Phototypesetting
        !            79: Documentation
        !            80: .CS  16 0 16 0 12 6
        !            81: .tr # 
        !            82: .de e1
        !            83: .nr \\$1 \\$2
        !            84: ..
        !            85: .de e2
        !            86: .if !\\n(\\$1=\\n% .tm Error in example \\$1: referred to page \\n(\\$1, is on page \\n%
        !            87: .rr \\$1
        !            88: ..
        !            89: .di qq
        !            90: .EQ
        !            91: delim $$
        !            92: .EN
        !            93: .di
        !            94: .rm qq
        !            95: .SH
        !            96: Introduction.
        !            97: .PP
        !            98: .I
        !            99: Tbl
        !           100: .R
        !           101: turns a simple description
        !           102: of a table into a
        !           103: .I
        !           104: troff
        !           105: .R
        !           106: or
        !           107: .I
        !           108: nroff
        !           109: .R
        !           110: [1]
        !           111: program (list of commands) that prints the table.
        !           112: .I
        !           113: Tbl
        !           114: .R
        !           115: may be used on the
        !           116: .UX
        !           117: .NL
        !           118: [2] system and on the Honeywell 6000
        !           119: .SM
        !           120: GCOS
        !           121: .NL
        !           122: system.
        !           123: It
        !           124: attempts to isolate a portion of a job that it can
        !           125: successfully
        !           126: handle and leave the remainder for other programs.
        !           127: Thus
        !           128: .I
        !           129: tbl
        !           130: .R
        !           131: may be used with the equation formatting
        !           132: program
        !           133: .I
        !           134: eqn
        !           135: .R
        !           136: [3]
        !           137: or various
        !           138: layout macro packages
        !           139: [4,5,6],
        !           140: but does not duplicate their functions.
        !           141: .PP
        !           142: This memorandum is divided into two parts.
        !           143: First we give the rules for preparing
        !           144: .I
        !           145: tbl
        !           146: .R
        !           147: input; then some examples are shown.
        !           148: The description of rules is precise but technical, and
        !           149: the beginning user may prefer to read the examples first,
        !           150: as they show some common table arrangements.
        !           151: A section explaining how to invoke
        !           152: .I
        !           153: tbl
        !           154: .R
        !           155: precedes the examples.
        !           156: To avoid repetition, henceforth read
        !           157: .I
        !           158: troff
        !           159: .R
        !           160: as
        !           161: .I
        !           162: ``troff
        !           163: .R
        !           164: or
        !           165: .I
        !           166: nroff.''
        !           167: .R
        !           168: .ds . \^\s14.\s0
        !           169: .PP
        !           170: The input to
        !           171: .I
        !           172: tbl
        !           173: .R
        !           174: is text for a document, with tables preceded by a ``\*.TS''
        !           175: (table start)
        !           176: command and followed by a ``\*.TE''
        !           177: (table end) command.
        !           178: .I
        !           179: Tbl
        !           180: .R
        !           181: processes the tables, generating
        !           182: .I
        !           183: troff
        !           184: .R
        !           185: formatting commands,
        !           186: and leaves the remainder of the text unchanged.
        !           187: The ``\*.TS'' and ``\*.TE''
        !           188: lines are copied, too, so that
        !           189: .I
        !           190: troff
        !           191: .R
        !           192: page layout macros
        !           193: (such as the memo formatting macros [4]\|) can use these lines
        !           194: to delimit and place tables as they see fit.
        !           195: In particular, any arguments on the ``\*.TS'' or ``\*.TE''
        !           196: lines
        !           197: are copied but otherwise ignored, and may be used by document layout
        !           198: macro commands.
        !           199: .PP
        !           200: The format of the input is as follows:
        !           201: .DS
        !           202: \&text
        !           203: \&\*.TS
        !           204: \&\fItable\fR
        !           205: \&\*.TE
        !           206: \&text
        !           207: \&\*.TS
        !           208: \&\fItable\fR
        !           209: \&\*.TE
        !           210: \&text
        !           211: \&\&\*. \*. \*.
        !           212: .DE
        !           213: where the format of each table is as follows:
        !           214: .DS
        !           215: \&\*.TS
        !           216: \fIoptions \fB;\fR
        !           217: \fIformat \*.
        !           218: data
        !           219: \&\fR\*.TE
        !           220: .DE
        !           221: Each table is independent, and must contain formatting
        !           222: information
        !           223: followed by the data to be entered in the table.
        !           224: The formatting information, which describes the
        !           225: individual columns and rows of the table, may be preceded
        !           226: by a few options that affect the entire table.
        !           227: A detailed description of tables is given in the next section.
        !           228: .sp .5
        !           229: .SH
        !           230: Input commands.
        !           231: .PP
        !           232: As indicated above, a table contains, first, global options,
        !           233: then a format section describing the layout of the table
        !           234: entries, and then the data to be printed.  The format and data
        !           235: are always required, but not the options.
        !           236: The various parts of the table are entered as follows:
        !           237: .sp .5v
        !           238: .IP 1)
        !           239: O\s-2PTIONS.\s0
        !           240: There may be a single line of options
        !           241: affecting the whole table.
        !           242: If present, this line must follow the \*.TS line immediately
        !           243: and must contain a list of option names
        !           244: separated by spaces, tabs, or commas, and must be terminated by a semicolon.
        !           245: The allowable options are:
        !           246: .RS
        !           247: .IP \fB##center\fR 13
        !           248: \(em center the table (default is left-adjust);
        !           249: .IP \fB##expand\fR
        !           250: \(em make the table as wide as the current line length;
        !           251: .IP \fB##box\fR
        !           252: \(em enclose the table in a box;
        !           253: .IP \fB##allbox\fR
        !           254: \(em enclose each item in the table in a box;
        !           255: .IP \fB##doublebox\fR
        !           256: \(em enclose the table in two boxes;
        !           257: .IP \fB##tab#\fR(\fIx\fR\^)
        !           258: \(em use \fIx\fR instead of tab to separate data items.
        !           259: .IP \fB##linesize#(\fIn\fR\^)
        !           260: \(em set lines or rules (e.g. from \fBbox\fR\^) in \fIn\fR point type;
        !           261: .IP \fB##delim#(\fIxy\fR\^)
        !           262: \(em recognize \fIx\fR and \fIy\fR as the \fIeqn\fR delimiters.
        !           263: .RE
        !           264: .LP
        !           265: .ns
        !           266: .IP
        !           267: The
        !           268: .I
        !           269: tbl
        !           270: .R
        !           271: program
        !           272: tries to keep boxed tables on one page by issuing
        !           273: appropriate ``need'' (\fI\*.ne\fR\|) commands.
        !           274: These requests are calculated from the number of lines in the tables,
        !           275: and if there are spacing commands embedded in the input, these requests may be inaccurate;
        !           276: use normal
        !           277: .I
        !           278: troff
        !           279: .R
        !           280: procedures, such as keep-release macros, in that case.
        !           281: The user who must have a multi-page boxed table
        !           282: should use macros designed for this purpose,
        !           283: as explained below under `Usage.'
        !           284: .sp .5v
        !           285: .IP 2) 5
        !           286: F\s-2ORMAT\s0.
        !           287: The format section of the table specifies the layout
        !           288: of the columns.
        !           289: Each line in this section corresponds to one line
        !           290: of the table (except that the last line corresponds to all following
        !           291: lines up to the next \*.T&, if any \(em see below),
        !           292: and each line contains a key-letter for each column
        !           293: of the table.
        !           294: It is good practice to separate the key letters for each
        !           295: column by spaces or tabs.
        !           296: Each key-letter is one of the following:
        !           297: .RS
        !           298: .cs B 25
        !           299: .IP "\ \ \fBL\fR\ or\ \fBl\fR" 10
        !           300: to indicate a left-adjusted column entry;
        !           301: .IP "\ \ \fBR\fR\ or\ \fBr\fR
        !           302: to indicate a right-adjusted column entry;
        !           303: .IP "\ \ \fBC\fR\ or\ \fBc\fR
        !           304: to indicate a centered column entry;
        !           305: .IP "\ \ \fBN\fR\ or\ \fBn\fR
        !           306: to indicate a numerical column entry, to be aligned with other
        !           307: numerical entries so that the units digits of numbers line up;
        !           308: .IP "\ \ \fBA\fR\ or\ \fBa\fR
        !           309: to indicate an alphabetic subcolumn;
        !           310: all corresponding entries are aligned on the left, and positioned
        !           311: so that the widest is centered within the column (see
        !           312: example on page 12);
        !           313: .IP "\ \ \fBS\fR\ ori\ \fBs\fR
        !           314: to indicate a spanned heading, i.e. to indicate that the
        !           315: entry from the previous column continues across this
        !           316: column
        !           317: (not allowed for the first column, obviously); or
        !           318: .IP \ \ \fB\s+4\v'6p'^\v'-6p'\s0\fR
        !           319: to indicate a vertically spanned heading, i.e. to indicate that
        !           320: the entry from the previous row continues down through this row.
        !           321: (Not allowed for the first row of the table, obviously).
        !           322: .cs B
        !           323: .RE
        !           324: .LP
        !           325: .ns
        !           326: .IP
        !           327: When numerical alignment is specified, a location for the decimal
        !           328: point is sought.  The rightmost dot (\*.)
        !           329: adjacent to a digit is used as a decimal point; if there is no
        !           330: dot adjoining a digit, the rightmost digit is used as a units digit;
        !           331: if no alignment is indicated, the item is centered in the column.
        !           332: However, the special non-printing character string \e& may be used
        !           333: to override unconditionally dots
        !           334: and digits, or to align alphabetic data;
        !           335: this string lines up where a dot normally would,
        !           336: and then disappears from the final output.
        !           337: In the example below, the items shown at the left will be
        !           338: aligned (in a numerical column) as shown on the right:
        !           339: .KS
        !           340: .TS
        !           341: center;
        !           342: l6 n.
        !           343: 13     13
        !           344: 4\*.2  4\&\*.2
        !           345: 26\*.4\*.12    26\*.4\&\*.12
        !           346: abc    abc
        !           347: abc\e& abc\&
        !           348: 43\e&3\*.22    43\&3\*.22
        !           349: 749\*.12       749\&\*.12
        !           350: .TE
        !           351: .KE
        !           352: .IP
        !           353: \fBNote:\fR
        !           354: If numerical data are used in the same column with wider
        !           355: .B L
        !           356: or
        !           357: .B r
        !           358: type table entries, the widest \fInumber\fR is centered relative
        !           359: to the wider
        !           360: .B L
        !           361: or
        !           362: .B r
        !           363: items (\fBL\fR is used instead of \fBl\fR for readability;
        !           364: they have the same meaning as key-letters).
        !           365: Alignment within the numerical items is preserved.
        !           366: This is similar to the behavior of
        !           367: .B a
        !           368: type data, as explained above.
        !           369: However,
        !           370: alphabetic subcolumns (requested by the
        !           371: .B
        !           372: a
        !           373: .R
        !           374: key-letter)
        !           375: are always slightly indented relative to
        !           376: .B
        !           377: L
        !           378: .R
        !           379: items;
        !           380: if necessary, the column width is increased to force this.
        !           381: This is not true for \fBn\fR type entries.
        !           382: .IP
        !           383: .bd I 3
        !           384: .ft I
        !           385: Warning:
        !           386: .ft 1
        !           387: .bd I
        !           388: the \fBn\fR and \fBa\fR items should not be used in
        !           389: the same column.
        !           390: .IP
        !           391: For readability, the key-letters describing each column should
        !           392: be separated by spaces.
        !           393: The end of the format section is indicated by a period.
        !           394: The layout of the key-letters in the format section resembles
        !           395: the layout of the actual data in the table.
        !           396: Thus a simple format might appear as:
        !           397: .br
        !           398: .ne 3
        !           399: .in +2
        !           400: .nf
        !           401: c  s  s
        !           402: l  n  n \*.
        !           403: .fi
        !           404: .in -2
        !           405: which specifies a table of three columns. The first line
        !           406: of the table contains a heading centered across all three
        !           407: columns; each remaining line contains a left-adjusted item
        !           408: in the first column followed by two columns of numerical
        !           409: data.
        !           410: A sample table in this format might be:
        !           411: .br
        !           412: .ne 6v
        !           413: .br
        !           414: .in +4
        !           415: .TS
        !           416: c s s
        !           417: l n n.
        !           418: Overall title
        !           419: Item-a 34.22   9.1
        !           420: Item-b 12.65   .02
        !           421: Items: c,d,e   23      5.8
        !           422: Total  69.87   14.92
        !           423: .TE
        !           424: .in -4
        !           425: There are some additional features of the key-letter system:
        !           426: .RS
        !           427: .IP "\fI##Horizontal lines#\fR"
        !           428: \(em A key-letter may be replaced by `\(ul'
        !           429: (underscore) to indicate
        !           430: a horizontal line in place of the corresponding column entry,
        !           431: or by `=' to indicate a double horizontal line.
        !           432: If an adjacent column contains a horizontal line, or if
        !           433: there are vertical lines adjoining this column,
        !           434: this horizontal line is extended to meet the nearby lines.
        !           435: If any data entry is provided for this column, it is ignored and
        !           436: a warning message is printed.
        !           437: .QQ do the D(x) and M(x) to draw a line of 'x' characters.
        !           438: .QQ D will draw divided lines, M merged lines. thus - is simplh M(\(ru)
        !           439: .IP "\fI##Vertical lines#\fR"
        !           440: \(em A vertical bar may be placed between column key-letters.  This will
        !           441: cause a vertical line between the corresponding columns of the table.
        !           442: A vertical bar to the left of the first key-letter
        !           443: or to the right of the last one produces a line at the
        !           444: edge of the table.
        !           445: If two vertical bars appear between key-letters, a double vertical
        !           446: line is drawn.
        !           447: .IP "\fI##Space between columns#\fR"
        !           448: \(em A number may follow the key-letter.  This indicates the amount of separation
        !           449: between this column and the next column.
        !           450: The number normally specifies the separation in
        !           451: .I
        !           452: ens
        !           453: .R
        !           454: (one
        !           455: en
        !           456: .ne 3
        !           457: is about the width of the letter `n').* 
        !           458: .FS
        !           459: * More precisely, an en is a number of points (1 point = 1/72 inch)
        !           460: equal to half the current type size.
        !           461: .FE
        !           462: If the ``expand'' option is used, then these numbers are multiplied
        !           463: by a constant such that the table is as wide as the current line length.
        !           464: The default column separation number is 3.
        !           465: If the separation is changed the worst case (largest space requested) governs.
        !           466: .IP "\fI##Vertical spanning#\fR"
        !           467: \(em Normally, vertically spanned items extending over several
        !           468: rows of the table are centered in their vertical range.
        !           469: If a key-letter is followed by
        !           470: .B
        !           471: t
        !           472: .R
        !           473: or
        !           474: .B T ,
        !           475: any corresponding vertically spanned item
        !           476: will begin at the top line of its range.
        !           477: .IP "\fI##Font changes#\fR"
        !           478: \(em A key-letter may be followed by a string containing a font
        !           479: name or number
        !           480: preceded by the letter
        !           481: .B f
        !           482: or
        !           483: .B F .
        !           484: This indicates that the corresponding column should be in a different
        !           485: font from the default font (usually Roman).
        !           486: All font names are one or two letters; a one-letter font
        !           487: name should be separated from whatever follows by a space or tab.
        !           488: The single letters
        !           489: \f3B\f1, \f3b\f1, \f3I\f1,
        !           490: and
        !           491: \f3i\f1
        !           492: are shorter synonyms for
        !           493: .B f\^B
        !           494: and
        !           495: .B f\^I .
        !           496: Font change commands given with the table entries
        !           497: override these specifications.
        !           498: .IP "\fI##Point size changes#\fR"
        !           499: \(em A key-letter may be followed by the letter
        !           500: .B p
        !           501: or
        !           502: .B P
        !           503: and a number to indicate the point size of the corresponding table entries.
        !           504: The number may be a signed digit, in which case it is taken as
        !           505: an increment or decrement
        !           506: from the current point size.
        !           507: If both a point size and a column separation value are given,
        !           508: one or more blanks must separate them.
        !           509: .IP "\fI##Vertical spacing changes#\fR"
        !           510: \(em A key-letter may be followed by the letter
        !           511: .B v
        !           512: or
        !           513: .B V
        !           514: and a number to indicate the vertical line spacing to be used
        !           515: within a multi-line corresponding table entry.
        !           516: The number may be a signed digit, in which case it is taken as an increment
        !           517: or decrement from the current vertical spacing.
        !           518: A column separation value must be separated by blanks or some other
        !           519: specification from a vertical spacing request.
        !           520: This request has no effect unless the corresponding table entry
        !           521: is a text block (see below).
        !           522: .IP "\fI##Column width indication#\fR"
        !           523: \(em A key-letter may be followed by the letter
        !           524: .B w
        !           525: or
        !           526: .B W
        !           527: and a width value in parentheses.
        !           528: This width is used as a minimum column width.
        !           529: If the largest element in the column is not as wide as the width value
        !           530: given after the \fBw\fR, the largest element is assumed to be that wide.
        !           531: If the largest element in the column is wider than the specified value,
        !           532: its width is used.
        !           533: The width is also used as a default line
        !           534: length for included text blocks.
        !           535: Normal
        !           536: .I
        !           537: troff
        !           538: .R
        !           539: units can be used to scale the width value; if none are used,
        !           540: the default is
        !           541: ens.
        !           542: If the width specification is a unitless integer
        !           543: the parentheses may be omitted.
        !           544: If the width value is changed in a column, the \fIlast\fR one given controls.
        !           545: .IP "\fI##Equal width columns#\fR"
        !           546: \(em A key-letter may be followed by the letter
        !           547: .B e
        !           548: or
        !           549: .B E
        !           550: to indicate equal width columns.
        !           551: All columns whose
        !           552: key-letters are followed by \fBe\fR or \fBE\fR are made the same width.
        !           553: This permits the user to get a group of regularly spaced
        !           554: columns.
        !           555: .IP "##\fBNote:\fR#"
        !           556: The order of the above features is immaterial; they need not be separated
        !           557: by spaces, except as indicated above to avoid ambiguities involving
        !           558: point size and font changes.  Thus
        !           559: a numerical column entry in italic font and 12 point type with a minimum
        !           560: width of 2.5 inches and separated by 6 ens from the next column could
        !           561: be specified as
        !           562: .in +5
        !           563: np12w(2\*.5i)f\|I  6
        !           564: .in -5
        !           565: .IP "\fI##Alternative notation#\fR"
        !           566: \(em Instead of listing the format of successive lines of a table
        !           567: on consecutive lines of the format section,
        !           568: successive line formats may be given on the same line, separated
        !           569: by commas, so that the format for the example
        !           570: above might have been written:
        !           571: .in +5
        !           572: c s s, l n n \*.
        !           573: .in -5
        !           574: .IP "\fI##Default#\fR"
        !           575: \(em Column descriptors missing from the end
        !           576: of a format line are assumed to be \fBL\fR.
        !           577: The longest line in the format section, however,
        !           578: defines the number of columns
        !           579: in the table;
        !           580: extra columns in the data are ignored silently.
        !           581: .QQ put in the diagnostics.
        !           582: .RE
        !           583: .sp .5v
        !           584: .IP 3)
        !           585: D\s-2ATA\s0.
        !           586: The data for the table are typed after the format.
        !           587: Normally, each table line is typed as one line of data.
        !           588: Very long input lines can be broken: any line whose last character is
        !           589: \e is combined with the following line (and the \e vanishes).
        !           590: The data for different columns (the table entries) are separated by tabs,
        !           591: or by whatever character has been specified in the option
        !           592: .I tabs
        !           593: option.
        !           594: There are a few special cases:
        !           595: .RS
        !           596: .IP "\fI##Troff commands within tables\fR#"
        !           597: \(em An input line
        !           598: beginning with a `\*.' followed by anything
        !           599: but a number is assumed to be a command to
        !           600: .I
        !           601: troff
        !           602: .R
        !           603: and is passed through unchanged, retaining its position in the table.
        !           604: So, for example, space within a table may be produced by ``\*.sp''
        !           605: commands
        !           606: in the data.
        !           607: .IP "\fI##Full width horizontal lines\fR#"
        !           608: \(em An input
        !           609: .I line
        !           610: containing only the character $fat "\(ul" $ (underscore)
        !           611: or \fB=\fR (equal sign) is taken to be a single or double
        !           612: line, respectively, extending the
        !           613: full width
        !           614: of the
        !           615: .I table.
        !           616: .IP "\fI##Single column horizontal lines\fR#"
        !           617: \(em An input table
        !           618: .I entry
        !           619: containing only the character $fat "\(ul" $ or \fB=\fR
        !           620: is taken to be a single or double line extending
        !           621: the full width of the
        !           622: .I column.
        !           623: Such lines are extended to meet horizontal or vertical
        !           624: lines adjoining this column.
        !           625: To obtain these characters explicitly in a column, either
        !           626: precede them by \e& or
        !           627: follow them by a space before the usual tab or newline.
        !           628: .IP "\fI##Short horizontal lines\fR#"
        !           629: \(em An input table
        !           630: .I entry
        !           631: containing only the string $fat "\e\(ul"$
        !           632: is taken to be a single line as wide as the contents of
        !           633: the column.  It is not extended to meet
        !           634: adjoining lines.
        !           635: .IP "\fI##Vertically spanned items\fR#"
        !           636: \(em An input table entry containing only the
        !           637: character string
        !           638: .ft B
        !           639: \e\s+2\v'2p'^\v'-2p'\s0
        !           640: .ft R
        !           641: indicates that the table entry immediately
        !           642: above spans downward over this row.  It is equivalent
        !           643: to a table format key-letter of `^'.
        !           644: .IP "\fI##Text blocks\fR#"
        !           645: \(em In order to include a block of text as a table entry,
        !           646: precede it by $fat roman "T{" $ and follow
        !           647: it by $fat roman "T}" $.
        !           648: Thus the sequence
        !           649: .in +2
        !           650: .nf
        !           651:   \*. \*. \*. $fat roman "T{"$
        !           652: .I
        !           653:   block of
        !           654:   text
        !           655: .R
        !           656:   $fat roman "T}"$ \*. \*. \*.
        !           657: .in -2
        !           658: .fi
        !           659: is the way to enter, as a single entry in the table, something
        !           660: that cannot conveniently be typed as a simple string between
        !           661: tabs.
        !           662: Note that the $fat roman "T}" $ end delimiter must begin a line;
        !           663: additional columns of data may follow after a tab on the same line.
        !           664: See the example on page 11 for an illustration of included text blocks
        !           665: .e1 aa 11
        !           666: in a table.
        !           667: If more than twenty or thirty text blocks are used in a table,
        !           668: various limits in the
        !           669: .I
        !           670: troff
        !           671: .R
        !           672: program are likely to be exceeded,
        !           673: producing diagnostics such as `too many string/macro names' or `too many
        !           674: number registers.'
        !           675: .IP
        !           676: Text blocks are pulled out from the table, processed separately by
        !           677: .I
        !           678: troff,
        !           679: .R
        !           680: and replaced in the table as a solid block.  If no line length
        !           681: is specified in the
        !           682: .I
        !           683: block of text
        !           684: .R
        !           685: itself, or in the table format,
        !           686: the default is to use
        !           687: $ L times C / (N+1) $
        !           688: where
        !           689: .I
        !           690: L
        !           691: .R
        !           692: is the current line length,
        !           693: .I
        !           694: C
        !           695: .R
        !           696: is the number of table columns spanned by the text,
        !           697: and
        !           698: .I
        !           699: N
        !           700: .R
        !           701: is the total number of columns in the table.
        !           702: The other parameters (point size, font, etc.) used in setting the
        !           703: .I
        !           704: block of text
        !           705: .R
        !           706: are those in effect at the beginning of the table (including
        !           707: the effect of the ``\*.TS'' macro)
        !           708: and any table format specifications of size, spacing and font,
        !           709: using the \fBp\fR, \fBv\fR and \fBf\fR modifiers to the column key-letters.
        !           710: Commands within the text block itself are also recognized, of course.
        !           711: However,
        !           712: .I troff
        !           713: commands within the table data but not within the text block
        !           714: do not affect that block.
        !           715: .br
        !           716: .di RR
        !           717: .     this is going down a rathole
        !           718: .EQ
        !           719: delim off
        !           720: .EN
        !           721: .di
        !           722: .rm RR
        !           723: .IP "##\fBWarnings:\fR#"
        !           724: \(em Although any number of lines may be present in a table,
        !           725: only the first 200 lines are used in calculating
        !           726: the widths of the various columns.  A multi-page table,
        !           727: of course, may be arranged as several single-page tables
        !           728: if this proves to be a problem.
        !           729: Other difficulties with formatting may arise because,
        !           730: in the calculation of column widths all table entries
        !           731: are assumed to be in the font and size being used when
        !           732: the ``\*.TS'' command was encountered, except for font and size changes
        !           733: indicated (a) in the table format section and (b)
        !           734: within the table data (as in the entry
        !           735: \es+3\efIdata\efP\es0\|).
        !           736: Therefore, although arbitrary
        !           737: .I
        !           738: troff
        !           739: .R
        !           740: requests may be sprinkled in a table, care must be taken
        !           741: to avoid confusing the width calculations;
        !           742: use requests such as `\*.ps' with care.
        !           743: .tr ##
        !           744: .sp .5v
        !           745: .RE
        !           746: .IP 4)
        !           747: A\s-2DDITIONAL COMMAND LINES\s0.
        !           748: If the format of a table must be changed after
        !           749: many similar lines, as with sub-headings or summarizations, the ``\*.T&''
        !           750: (table continue)
        !           751: command can be used
        !           752: to change column parameters.
        !           753: The outline of such a table input is:
        !           754: .DS
        !           755: .ft R
        !           756: \&\*.TS
        !           757: .ft I
        !           758: \&options \fB;\fP
        !           759: \&format \*.
        !           760: \&data
        !           761: \&\*. \*. \*.
        !           762: .ft R
        !           763: \&\*.T&
        !           764: .ft I
        !           765: \&format \*.
        !           766: \&data
        !           767: .ft R
        !           768: \&\*.T&
        !           769: .ft I
        !           770: \&format \*.
        !           771: \&data
        !           772: .ft R
        !           773: \&\*.TE
        !           774: .DE
        !           775: as in the examples on pages 10 and 13.
        !           776: .e1 ab 10
        !           777: .e1 ac 13
        !           778: Using this procedure, each table line can be close to its corresponding format line.
        !           779: .bd I 3
        !           780: .br
        !           781: .sp 3p
        !           782: .ft I
        !           783: Warning:
        !           784: .ft R
        !           785: .bd I
        !           786: it is not possible to change the number of columns, the space
        !           787: between columns, the global options such as \fIbox,\fR
        !           788: or the selection of columns to be made equal width.
        !           789: .SH
        !           790: Usage.
        !           791: .PP
        !           792: On
        !           793: \s-2UNIX\s0,
        !           794: .I
        !           795: tbl
        !           796: .R
        !           797: can be run on a simple table with the command
        !           798: .DS
        !           799: tbl input-file | troff
        !           800: .DE
        !           801: but
        !           802: for more complicated use, where there are several input files,
        !           803: and they contain equations and \fIms\fR memorandum layout commands as well
        !           804: as tables, the normal command would be
        !           805: .DS
        !           806: tbl file-1 file-2 \*. \*. \*. | eqn | troff \-ms
        !           807: .DE
        !           808: and, of course, the usual options may be used on the
        !           809: .I
        !           810: troff
        !           811: .R
        !           812: and
        !           813: .I
        !           814: eqn
        !           815: .R
        !           816: commands.  The usage for
        !           817: .I
        !           818: nroff
        !           819: .R
        !           820: is similar
        !           821: to that for
        !           822: .I
        !           823: troff,
        !           824: .R
        !           825: but only
        !           826: \s-2TELETYPE\s+2\(rg Model 37 and
        !           827: Diablo-mechanism (\s-2DASI\s0 or \s-2GSI\s0)
        !           828: terminals can print boxed tables directly.
        !           829: .PP
        !           830: For the convenience of users employing line printers without
        !           831: adequate driving tables or post-filters, there is a special
        !           832: .I \-TX
        !           833: command line option to
        !           834: .I tbl
        !           835: which produces output that does not have fractional line
        !           836: motions in it.
        !           837: The only other command line options recognized by
        !           838: .I tbl
        !           839: are
        !           840: .I \-ms
        !           841: and
        !           842: .I \-mm
        !           843: which are turned into
        !           844: commands to fetch the corresponding macro files;
        !           845: usually it is more convenient to place these arguments
        !           846: on the
        !           847: .I troff
        !           848: part of the command line,
        !           849: but they are accepted by
        !           850: .I tbl
        !           851: as well.
        !           852: .PP
        !           853: Note that when
        !           854: .I
        !           855: eqn
        !           856: .R
        !           857: and
        !           858: .I
        !           859: tbl
        !           860: .R
        !           861: are used together on the same file
        !           862: .I
        !           863: tbl
        !           864: .R
        !           865: should be used first.
        !           866: If there are no equations within tables,
        !           867: either order works, but it is usually faster
        !           868: to run
        !           869: .I
        !           870: tbl
        !           871: .R
        !           872: first, since
        !           873: .I
        !           874: eqn
        !           875: .R
        !           876: normally produces a larger expansion of the input
        !           877: than
        !           878: .I
        !           879: tbl.
        !           880: .R
        !           881: However, if there are equations within tables
        !           882: (using the
        !           883: .I
        !           884: delim
        !           885: .R
        !           886: mechanism in
        !           887: .I
        !           888: eqn\fR),
        !           889: .I
        !           890: tbl
        !           891: .R
        !           892: must be first or the output will be scrambled.
        !           893: Users must also beware of using equations in
        !           894: \fBn\fR-style columns; this is nearly always wrong,
        !           895: since
        !           896: .I
        !           897: tbl
        !           898: .R
        !           899: attempts to split numerical format items into two parts and this
        !           900: is not possible with equations.
        !           901: The user can defend against this by giving the
        !           902: .I delim(xx)
        !           903: table option;
        !           904: this prevents splitting of numerical columns within the delimiters.
        !           905: For example, if the
        !           906: .I eqn
        !           907: delimiters
        !           908: are
        !           909: .I $$ ,
        !           910: giving
        !           911: .I delim($$)
        !           912: a numerical column such as
        !           913: ``1245 $+- 16$''
        !           914: will be divided after 1245, not after 16.
        !           915: .PP
        !           916: .I
        !           917: Tbl
        !           918: .R
        !           919: limits tables to twenty columns; however,
        !           920: use of more than 16 numerical columns may fail because of
        !           921: limits in
        !           922: .I
        !           923: troff,
        !           924: .R
        !           925: producing the `too many number registers' message.
        !           926: \fITroff\fR number registers used by
        !           927: .I
        !           928: tbl
        !           929: .R
        !           930: must be avoided by the user within tables;
        !           931: these include two-digit names from 31 to 99,
        !           932: and names of the forms
        !           933: #\fIx\fR, \fIx\fR+, \fIx\fR\ |, \v'3p'^\v'-3p'\fIx\fR, and \fIx\fR\(mi,
        !           934: where
        !           935: \fIx\fR is any lower case letter.
        !           936: The names
        !           937: ##, #\(mi, and #^ are also used in certain circumstances.
        !           938: To conserve number register names, the
        !           939: \fBn\fR
        !           940: and
        !           941: \fBa\fR
        !           942: formats share a register;
        !           943: hence the restriction above that they may not be used in the same column.
        !           944: .PP
        !           945: For aid in writing layout macros,
        !           946: .I
        !           947: tbl
        !           948: .R
        !           949: defines a number register TW which is
        !           950: the table width; it is defined by the time that the ``\*.TE'' macro
        !           951: is invoked and may be used in the expansion of that macro.
        !           952: More importantly, to assist in laying out multi-page boxed tables
        !           953: the macro T# is defined to produce the bottom lines and side lines of a boxed
        !           954: table, and then invoked at its end.  By use of this macro
        !           955: in the page footer a multi-page table can be boxed.
        !           956: In particular, the
        !           957: .I
        !           958: ms
        !           959: .R
        !           960: macros can be used to print a multi-page boxed table with a repeated heading
        !           961: by giving the
        !           962: argument H to the ``\*.TS'' macro.
        !           963: If the table start macro is written
        !           964: .br
        !           965:        \&\*.TS H
        !           966: .br
        !           967: a line of the form
        !           968: .br
        !           969:        \&\*.TH
        !           970: .br
        !           971: must be given in the table after any table heading (or at the start if none).
        !           972: Material up to the ``\*.TH'' is placed at the top of each page of table;
        !           973: the remaining lines in the table are placed on several pages as required.
        !           974: Note that this is
        !           975: .I
        !           976: not
        !           977: .R
        !           978: a feature of
        !           979: .I
        !           980: tbl,
        !           981: .R
        !           982: but of the \fIms\fR layout macros.
        !           983: .SH
        !           984: Examples.
        !           985: .PP
        !           986: Here are some examples illustrating features of
        !           987: .I
        !           988: tbl.
        !           989: .R
        !           990: .ds T \|\h'.4n'\v'-.2n'\s6\zT\s0\s10\v'.2n'\h'-.4n'\(ci\|\s0
        !           991: The symbol \*T in the input represents a tab character.
        !           992: .de IN
        !           993: .po \\n(POu
        !           994: .sp |\\n(.hu
        !           995: .sp
        !           996: .ne \\$1
        !           997: .mk
        !           998: .B
        !           999: Input:
        !          1000: .R
        !          1001: .sp .5
        !          1002: .nf
        !          1003: .in +3n
        !          1004: ..
        !          1005: .de OU
        !          1006: .br
        !          1007: .in -3n
        !          1008: .rt
        !          1009: .po +3i
        !          1010: .B
        !          1011: Output:
        !          1012: .R
        !          1013: .sp .5
        !          1014: ..
        !          1015: .rm TS
        !          1016: .rm TE
        !          1017: .nf
        !          1018: .IN 2.5i
        !          1019: \&\*.TS
        !          1020: \&box;
        !          1021: \&c c c
        !          1022: \&l l l\*.
        !          1023: \&Language\*TAuthors\*TRuns on
        !          1024: \&
        !          1025: \&Fortran\*TMany\*TAlmost anything
        !          1026: \&PL/1\*TIBM\*T360/370
        !          1027: \&C\*TBTL\*T11/45,H6000,370
        !          1028: \&BLISS\*TCarnegie-Mellon\*TPDP-10,11
        !          1029: \&IDS\*THoneywell\*TH6000
        !          1030: \&Pascal\*TStanford\*T370
        !          1031: \&\*.TE
        !          1032: .OU
        !          1033: .TS
        !          1034: box;
        !          1035: c c c
        !          1036: l l l.
        !          1037: Language       Authors Runs on
        !          1038: 
        !          1039: Fortran        Many    Almost anything
        !          1040: PL/1   IBM     360/370
        !          1041: C      BTL     11/45,H6000,370
        !          1042: BLISS  Carnegie-Mellon PDP-10,11
        !          1043: IDS    Honeywell       H6000
        !          1044: Pascal Stanford        370
        !          1045: .TE
        !          1046: .IN 2.8i
        !          1047: \&\*.TS
        !          1048: \&allbox;
        !          1049: \&c s s
        !          1050: \&c c c
        !          1051: \&n n n\*.
        !          1052: \&AT&T Common Stock
        !          1053: \&Year\*TPrice\*TDividend
        !          1054: \&1971\*T41-54\*T$2\*.60
        !          1055: \&2\*T41-54\*T2\*.70
        !          1056: \&3\*T46-55\*T2\*.87
        !          1057: \&4\*T40-53\*T3\*.24
        !          1058: \&5\*T45-52\*T3\*.40
        !          1059: \&6\*T51-59\*T\*.95*
        !          1060: \&\*.TE
        !          1061: \&* (first quarter only)
        !          1062: .OU
        !          1063: .TS
        !          1064: allbox;
        !          1065: c s s
        !          1066: c c c
        !          1067: n n n.
        !          1068: AT&T Common Stock
        !          1069: Year   Price   Dividend
        !          1070: 1971   41-54   $2.60
        !          1071: 2      41-54   2.70
        !          1072: 3      46-55   2.87
        !          1073: 4      40-53   3.24
        !          1074: 5      45-52   3.40
        !          1075: 6      51-59   .95*
        !          1076: .TE
        !          1077: * (first quarter only)
        !          1078: .IN 4i
        !          1079: \&\*.TS
        !          1080: \&box;
        !          1081: \&c s s
        !          1082: \&c | c | c
        !          1083: \&l | l | n\*.
        !          1084: \&Major New York Bridges
        !          1085: \&=
        !          1086: \&Bridge\*TDesigner\*TLength
        !          1087: \&\(ul
        !          1088: \&Brooklyn\*TJ\*. A\*. Roebling\*T1595
        !          1089: \&Manhattan\*TG\*. Lindenthal\*T1470
        !          1090: \&Williamsburg\*TL\*. L\*. Buck\*T1600
        !          1091: \&\(ul
        !          1092: \&Queensborough\*TPalmer &\*T1182
        !          1093: \&\*T  Hornbostel
        !          1094: \&\(ul
        !          1095: \&\*T\*T1380
        !          1096: \&Triborough\*TO\*. H\*. Ammann\*T\(ul
        !          1097: \&\*T\*T383
        !          1098: \&\(ul
        !          1099: \&Bronx Whitestone\*TO\*. H\*. Ammann\*T2300
        !          1100: \&Throgs Neck\*TO\*. H\*. Ammann\*T1800
        !          1101: \&\(ul
        !          1102: \&George Washington\*TO\*. H\*. Ammann\*T3500
        !          1103: \&\*.TE
        !          1104: .OU
        !          1105: .TS
        !          1106: box;
        !          1107: c s s
        !          1108: c | c | c
        !          1109: l | l | n.
        !          1110: Major New York Bridges
        !          1111: =
        !          1112: Bridge Designer        Length
        !          1113: _
        !          1114: Brooklyn       J. A. Roebling  1595
        !          1115: Manhattan      G. Lindenthal   1470
        !          1116: Williamsburg   L. L. Buck      1600
        !          1117: _
        !          1118: Queensborough  Palmer &        1182
        !          1119:          Hornbostel
        !          1120: _
        !          1121:                1380
        !          1122: Triborough     O. H. Ammann    _
        !          1123:                383
        !          1124: _
        !          1125: Bronx Whitestone       O. H. Ammann    2300
        !          1126: Throgs Neck    O. H. Ammann    1800
        !          1127: _
        !          1128: George Washington      O. H. Ammann    3500
        !          1129: .TE
        !          1130: .IN 3.0i
        !          1131: \&\*.TS
        !          1132: \&c c
        !          1133: \&np-2 | n | \*.
        !          1134: \&\*TStack
        !          1135: \&\*T\(ul
        !          1136: \&1\*T46
        !          1137: \&\*T\(ul
        !          1138: \&2\*T23
        !          1139: \&\*T\(ul
        !          1140: \&3\*T15
        !          1141: \&\*T\(ul
        !          1142: \&4\*T6\*.5
        !          1143: \&\*T\(ul
        !          1144: \&5\*T2\*.1
        !          1145: \&\*T\(ul
        !          1146: \&\*.TE
        !          1147: .OU
        !          1148: .TS
        !          1149: c c
        !          1150: np-2 | n |.
        !          1151:        Stack
        !          1152:        _
        !          1153: 1      46
        !          1154:        _
        !          1155: 2      23
        !          1156:        _
        !          1157: 3      15
        !          1158:        _
        !          1159: 4      6.5
        !          1160:        _
        !          1161: 5      2.1
        !          1162:        _
        !          1163: .TE
        !          1164: .IN 2.5i
        !          1165: \&\*.TS
        !          1166: \&box;
        !          1167: \&L L L
        !          1168: \&L L \(ul
        !          1169: \&L L | LB
        !          1170: \&L L \(ul
        !          1171: \&L L L\*.
        !          1172: \&january\*Tfebruary\*Tmarch
        !          1173: \&april\*Tmay
        !          1174: \&june\*Tjuly\*TMonths
        !          1175: \&august\*Tseptember
        !          1176: \&october\*Tnovember\*Tdecember
        !          1177: \&\*.TE
        !          1178: .OU
        !          1179: .TS
        !          1180: box;
        !          1181: L L L
        !          1182: L L _
        !          1183: L L | LB
        !          1184: L L _
        !          1185: L L L.
        !          1186: january        february        march
        !          1187: april  may
        !          1188: june   july    Months
        !          1189: august september
        !          1190: october        november        december
        !          1191: .TE
        !          1192: .IN 5.0i
        !          1193: .e2 ab
        !          1194: \&\*.TS
        !          1195: \&box;
        !          1196: \&cfB s s s\*.
        !          1197: \&Composition of Foods
        !          1198: \&\(ul
        !          1199: \&\*.T&
        !          1200: \&c  | c s s
        !          1201: \&c  | c s s
        !          1202: \&c   | c  | c  | c\*.
        !          1203: \&Food\*TPercent by Weight
        !          1204: \&\e^\*T\(ul
        !          1205: \&\e^\*TProtein\*TFat\*TCarbo-
        !          1206: \&\e^\*T\e^\*T\e^\*Thydrate
        !          1207: \&\(ul
        !          1208: \&\*.T&
        !          1209: \&l  | n  | n  | n\*.
        !          1210: \&Apples\*T\*.4\*T\*.5\*T13\*.0
        !          1211: \&Halibut\*T18\*.4\*T5\*.2\*T\*. \*. \*.
        !          1212: \&Lima beans\*T7\*.5\*T\*.8\*T22\*.0
        !          1213: \&Milk\*T3\*.3\*T4\*.0\*T5\*.0
        !          1214: \&Mushrooms\*T3\*.5\*T\*.4\*T6\*.0
        !          1215: \&Rye bread\*T9\*.0\*T\*.6\*T52\*.7
        !          1216: \&\*.TE
        !          1217: .OU
        !          1218: .TS
        !          1219: box;
        !          1220: cfB s s s.
        !          1221: Composition of Foods
        !          1222: _
        !          1223: .T&
        !          1224: c  |c s s
        !          1225: c  |c s s
        !          1226: c   |c  |c  |c.
        !          1227: Food   Percent by Weight
        !          1228: \^     _
        !          1229: \^     Protein Fat     Carbo-
        !          1230: \^     \^      \^      hydrate
        !          1231: _
        !          1232: .T&
        !          1233: l  |n  |n  |n.
        !          1234: Apples .4      .5      13.0
        !          1235: Halibut        18.4    5.2     ...
        !          1236: Lima beans     7.5     .8      22.0
        !          1237: Milk   3.3     4.0     5.0
        !          1238: Mushrooms      3.5     .4      6.0
        !          1239: Rye bread      9.0     .6      52.7
        !          1240: .TE
        !          1241: .IN 3.7i
        !          1242: .e2 aa
        !          1243: \&\*.TS
        !          1244: \&allbox;
        !          1245: \&cfI  s   s
        !          1246: \&c    cw(1i)   cw(1i)
        !          1247: \&lp9 lp9 lp9\*.
        !          1248: \&New York Area Rocks
        !          1249: \&Era\*TFormation\*TAge (years)
        !          1250: \&Precambrian\*TReading Prong\*T>1 billion
        !          1251: \&Paleozoic\*TManhattan Prong\*T400 million
        !          1252: \&Mesozoic\*TT{
        !          1253: \&\*.na
        !          1254: \&Newark Basin, incl\*.
        !          1255: \&Stockton, Lockatong, and Brunswick
        !          1256: \&formations; also Watchungs
        !          1257: \&and Palisades\*.
        !          1258: \&T}\*T200 million
        !          1259: \&Cenozoic\*TCoastal Plain\*TT{
        !          1260: \&On Long Island 30,000 years;
        !          1261: \&Cretaceous sediments redeposited
        !          1262: \&by recent glaciation\*.
        !          1263: \&\*.ad
        !          1264: \&T}
        !          1265: \&\*.TE
        !          1266: .OU
        !          1267: .fi
        !          1268: .TS
        !          1269: allbox;
        !          1270: cfI s   s
        !          1271: c   cw(1i)   cw(1i)
        !          1272: lp9 lp9 lp9.
        !          1273: New York Area Rocks
        !          1274: Era    Formation       Age (years)
        !          1275: Precambrian    Reading Prong   >1 billion
        !          1276: Paleozoic      Manhattan Prong 400 million
        !          1277: Mesozoic       T{
        !          1278: .na
        !          1279: Newark Basin, incl.
        !          1280: Stockton, Lockatong, and Brunswick
        !          1281: formations; also Watchungs
        !          1282: and Palisades.
        !          1283: T}     200 million
        !          1284: Cenozoic       Coastal Plain   T{
        !          1285: On Long Island 30,000 years;
        !          1286: Cretaceous sediments redeposited
        !          1287: by recent glaciation.
        !          1288: .ad
        !          1289: T}
        !          1290: .TE
        !          1291: .IN 2i
        !          1292: \&\*.EQ
        !          1293: \&delim $$
        !          1294: \&\*.EN
        !          1295: .sp
        !          1296: \&\*. \*. \*.
        !          1297: .sp
        !          1298: \&\*.TS
        !          1299: \&doublebox;
        !          1300: \&c c
        !          1301: \&l l\*.
        !          1302: \&Name\*TDefinition
        !          1303: \&\*.sp
        !          1304: \&\*.vs +2p
        !          1305: \&Gamma\*T$GAMMA (z) = int sub 0 sup inf  t sup {z-1} e sup -t dt$
        !          1306: \&Sine\*T$sin (x) = 1 over 2i ( e sup ix - e sup -ix )$
        !          1307: \&Error\*T$ roman erf (z) = 2 over sqrt pi int sub 0 sup z e sup {-t sup 2} dt$
        !          1308: \&Bessel\*T$ J sub 0 (z) = 1 over pi int sub 0 sup pi cos ( z sin theta ) d theta $
        !          1309: \&Zeta\*T$ zeta (s) = sum from k=1 to inf k sup -s ~~( Re~s > 1)$
        !          1310: \&\*.vs -2p
        !          1311: \&\*.TE
        !          1312: .di qq
        !          1313: .EQ
        !          1314: delim $$
        !          1315: .EN
        !          1316: .di
        !          1317: .rm qq
        !          1318: .rs
        !          1319: .OU
        !          1320: .TS
        !          1321: doublebox;
        !          1322: c c
        !          1323: l l.
        !          1324: Name   Definition
        !          1325: .sp
        !          1326: .vs +2p
        !          1327: Gamma  $GAMMA (z) = int sub 0 sup inf  t sup {z-1} e sup -t dt$
        !          1328: Sine   $sin (x) = 1 over 2i ( e sup ix - e sup -ix )$
        !          1329: Error  $ roman erf (z) = 2 over sqrt pi int sub 0 sup z e sup {-t sup 2} dt$
        !          1330: Bessel $ J sub 0 (z) = 1 over pi int sub 0 sup pi cos ( z sin theta ) d theta $
        !          1331: Zeta   $ zeta (s) = sum from k=1 to inf k sup -s ~~( Re~s > 1)$
        !          1332: .vs -2p
        !          1333: .TE
        !          1334: .ds : \|:\|
        !          1335: .IN 2i
        !          1336: \&\*.TS
        !          1337: \&box, tab(\*:);
        !          1338: \&cb s s s s
        !          1339: \&cp-2 s s s s
        !          1340: \&c |\|| c | c | c | c
        !          1341: \&c |\|| c | c | c | c
        !          1342: \&r2 |\|| n2 | n2 | n2 | n\*.
        !          1343: \&Readability of Text
        !          1344: \&Line Width and Leading for 10-Point Type
        !          1345: \&=
        !          1346: \&Line\*:Set\*:1-Point\*:2-Point\*:4-Point
        !          1347: \&Width\*:Solid\*:Leading\*:Leading\*:Leading
        !          1348: \&_
        !          1349: \&9 Pica\*:\e-9\*.3\*:\e-6\*.0\*:\e-5\*.3\*:\e-7\*.1
        !          1350: \&14 Pica\*:\e-4\*.5\*:\e-0\*.6\*:\e-0\*.3\*:\e-1\*.7
        !          1351: \&19 Pica\*:\e-5\*.0\*:\e-5\*.1\*: 0\*.0\*:\e-2\*.0
        !          1352: \&31 Pica\*:\e-3\*.7\*:\e-3\*.8\*:\e-2\*.4\*:\e-3\*.6
        !          1353: \&43 Pica\*:\e-9\*.1\*:\e-9\*.0\*:\e-5\*.9\*:\e-8\*.8
        !          1354: \&\*.TE
        !          1355: .OU
        !          1356: .TS
        !          1357: box, tab(:);
        !          1358: cb s s s s
        !          1359: cp-2 s s s s
        !          1360: c ||c |c |c |c
        !          1361: c ||c |c |c |c
        !          1362: r2 ||n2 |n2 |n2 |n.
        !          1363: Readability of Text
        !          1364: Line Width and Leading for 10-Point Type
        !          1365: =
        !          1366: Line:Set:1-Point:2-Point:4-Point
        !          1367: Width:Solid:Leading:Leading:Leading
        !          1368: _
        !          1369: 9 Pica:\-9.3:\-6.0:\-5.3:\-7.1
        !          1370: 14 Pica:\-4.5:\-0.6:\-0.3:\-1.7
        !          1371: 19 Pica:\-5.0:\-5.1: 0.0:\-2.0
        !          1372: 31 Pica:\-3.7:\-3.8:\-2.4:\-3.6
        !          1373: 43 Pica:\-9.1:\-9.0:\-5.9:\-8.8
        !          1374: .TE
        !          1375: .IN 7i
        !          1376: .e2 ac
        !          1377: \&\*.TS
        !          1378: \&c s
        !          1379: \&cip-2 s
        !          1380: \&l n
        !          1381: \&a n\*.
        !          1382: \&Some London Transport Statistics
        !          1383: \&(Year 1964)
        !          1384: \&Railway route miles\*T244
        !          1385: \&Tube\*T66
        !          1386: \&Sub-surface\*T22
        !          1387: \&Surface\*T156
        !          1388: \&\*.sp \*.5
        !          1389: \&\*.T&
        !          1390: \&l r
        !          1391: \&a r\*.
        !          1392: \&Passenger traffic \e- railway
        !          1393: \&Journeys\*T674 million
        !          1394: \&Average length\*T4\*.55 miles
        !          1395: \&Passenger miles\*T3,066 million
        !          1396: \&\*.T&
        !          1397: \&l r
        !          1398: \&a r\*.
        !          1399: \&Passenger traffic \e- road
        !          1400: \&Journeys\*T2,252 million
        !          1401: \&Average length\*T2\*.26 miles
        !          1402: \&Passenger miles\*T5,094 million
        !          1403: \&\*.T&
        !          1404: \&l n
        !          1405: \&a n\*.
        !          1406: \&\*.sp \*.5
        !          1407: \&Vehicles\*T12,521
        !          1408: \&Railway motor cars\*T2,905
        !          1409: \&Railway trailer cars\*T1,269
        !          1410: \&Total railway\*T4,174
        !          1411: \&Omnibuses\*T8,347
        !          1412: \&\*.T&
        !          1413: \&l n
        !          1414: \&a n\*.
        !          1415: \&\*.sp \*.5
        !          1416: \&Staff\*T73,739
        !          1417: \&Administrative, etc\*.\*T5,582
        !          1418: \&Civil engineering\*T5,134
        !          1419: \&Electrical eng\*.\*T1,714
        !          1420: \&Mech\*. eng\*. \e- railway\*T4,310
        !          1421: \&Mech\*. eng\*. \e- road\*T9,152
        !          1422: \&Railway operations\*T8,930
        !          1423: \&Road operations\*T35,946
        !          1424: \&Other\*T2,971
        !          1425: \&\*.TE
        !          1426: .OU
        !          1427: .TS
        !          1428: c s
        !          1429: cip-2 s
        !          1430: l n
        !          1431: a n.
        !          1432: Some London Transport Statistics
        !          1433: (Year 1964)
        !          1434: Railway route miles    244
        !          1435: Tube   66
        !          1436: Sub-surface    22
        !          1437: Surface        156
        !          1438: .sp .5
        !          1439: .T&
        !          1440: l r
        !          1441: a r.
        !          1442: Passenger traffic \(mi railway
        !          1443: Journeys       674 million
        !          1444: Average length 4.55 miles
        !          1445: Passenger miles        3,066 million
        !          1446: .T&
        !          1447: l r
        !          1448: a r.
        !          1449: Passenger traffic \(mi road
        !          1450: Journeys       2,252 million
        !          1451: Average length 2.26 miles
        !          1452: Passenger miles        5,094 million
        !          1453: .T&
        !          1454: l n
        !          1455: a n.
        !          1456: .sp .5
        !          1457: Vehicles       12,521
        !          1458: Railway motor cars     2,905
        !          1459: Railway trailer cars   1,269
        !          1460: Total railway  4,174
        !          1461: Omnibuses      8,347
        !          1462: .T&
        !          1463: l n
        !          1464: a n.
        !          1465: .sp .5
        !          1466: Staff  73,739
        !          1467: Administrative, etc.   5,582
        !          1468: Civil engineering      5,134
        !          1469: Electrical eng.        1,714
        !          1470: Mech. eng. \(mi railway        4,310
        !          1471: Mech. eng. \(mi road   9,152
        !          1472: Railway operations     8,930
        !          1473: Road operations        35,946
        !          1474: Other  2,971
        !          1475: .TE
        !          1476: .po \n(POu
        !          1477: .sp |\n(.hu
        !          1478: .de IN
        !          1479: .sp
        !          1480: .ne 1i
        !          1481: .B
        !          1482: Input:
        !          1483: .R
        !          1484: .sp .5
        !          1485: .in +3n
        !          1486: .nf
        !          1487: ..
        !          1488: .de OU
        !          1489: .sp
        !          1490: .in -3n
        !          1491: .ne 1i
        !          1492: .B
        !          1493: Output:
        !          1494: .R
        !          1495: .sp .5
        !          1496: ..
        !          1497: .ns
        !          1498: .EQ
        !          1499: delim off
        !          1500: .EN
        !          1501: .IN
        !          1502: \&\*.ps 8
        !          1503: \&\*.vs 10p
        !          1504: \&\*.TS
        !          1505: center box;
        !          1506: \&c s s
        !          1507: \&ci s s
        !          1508: \&c c c
        !          1509: \&lB l n\*.
        !          1510: \&New Jersey Representatives
        !          1511: \&(Democrats)
        !          1512: \&\*.sp \*.5
        !          1513: \&Name\*TOffice address\*TPhone
        !          1514: \&\*.sp \*.5
        !          1515: \&James J\*. Florio\*T23 S\*. White Horse Pike, Somerdale 08083\*T609-627-8222
        !          1516: \&William J\*. Hughes\*T2920 Atlantic Ave\*., Atlantic City 08401\*T609-345-4844
        !          1517: \&James J\*. Howard\*T801 Bangs Ave\*., Asbury Park 07712\*T201-774-1600
        !          1518: \&Frank Thompson, Jr\*.\*T10 Rutgers Pl\*., Trenton 08618\*T609-599-1619
        !          1519: \&Andrew Maguire\*T115 W\*. Passaic St\*., Rochelle Park 07662\*T201-843-0240
        !          1520: \&Robert A\*. Roe\*TU\*.S\*.P\*.O\*., 194 Ward St\*., Paterson 07510\*T201-523-5152
        !          1521: \&Henry Helstoski\*T666 Paterson Ave\*., East Rutherford 07073\*T201-939-9090
        !          1522: \&Peter W\*. Rodino, Jr\*.\*TSuite 1435A, 970 Broad St\*., Newark 07102\*T201-645-3213
        !          1523: \&Joseph G\*. Minish\*T308 Main St\*., Orange 07050\*T201-645-6363
        !          1524: \&Helen S\*. Meyner\*T32 Bridge St\*., Lambertville 08530\*T609-397-1830
        !          1525: \&Dominick V\*. Daniels\*T895 Bergen Ave\*., Jersey City 07306\*T201-659-7700
        !          1526: \&Edward J\*. Patten\*TNatl\*. Bank Bldg\*., Perth Amboy 08861\*T201-826-4610
        !          1527: \&\*.sp \*.5
        !          1528: \&\*.T&
        !          1529: \&ci s s
        !          1530: \&lB l n\*.
        !          1531: \&(Republicans)
        !          1532: \&\*.sp \*.5v
        !          1533: \&Millicent Fenwick\*T41 N\*. Bridge St\*., Somerville 08876\*T201-722-8200
        !          1534: \&Edwin B\*. Forsythe\*T301 Mill St\*., Moorestown 08057\*T609-235-6622
        !          1535: \&Matthew J\*. Rinaldo\*T1961 Morris Ave\*., Union 07083\*T201-687-4235
        !          1536: \&\*.TE
        !          1537: \&\*.ps 10
        !          1538: \&\*.vs 12p
        !          1539: .ne 3.2i
        !          1540: .OU
        !          1541: .ps 8
        !          1542: .vs 10p
        !          1543: .TS
        !          1544: center box;
        !          1545: c s s
        !          1546: ci s s
        !          1547: c c c
        !          1548: lB l n.
        !          1549: New Jersey Representatives
        !          1550: (Democrats)
        !          1551: .sp .5
        !          1552: Name   Office address  Phone
        !          1553: .sp .5
        !          1554: James J. Florio        23 S. White Horse Pike, Somerdale 08083 609-627-8222
        !          1555: William J. Hughes      2920 Atlantic Ave., Atlantic City 08401 609-345-4844
        !          1556: James J. Howard        801 Bangs Ave., Asbury Park 07712       201-774-1600
        !          1557: Frank Thompson, Jr.    10 Rutgers Pl., Trenton 08618   609-599-1619
        !          1558: Andrew Maguire 115 W. Passaic St., Rochelle Park 07662 201-843-0240
        !          1559: Robert A. Roe  U.S.P.O., 194 Ward St., Paterson 07510  201-523-5152
        !          1560: Henry Helstoski        666 Paterson Ave., East Rutherford 07073        201-939-9090
        !          1561: Peter W. Rodino, Jr.   Suite 1435A, 970 Broad St., Newark 07102        201-645-3213
        !          1562: Joseph G. Minish       308 Main St., Orange 07050      201-645-6363
        !          1563: Helen S. Meyner        32 Bridge St., Lambertville 08530       609-397-1830
        !          1564: Dominick V. Daniels    895 Bergen Ave., Jersey City 07306      201-659-7700
        !          1565: Edward J. Patten       Natl. Bank Bldg., Perth Amboy 08861     201-826-4610
        !          1566: .sp .5
        !          1567: .T&
        !          1568: ci s s
        !          1569: lB l n.
        !          1570: (Republicans)
        !          1571: .sp .5v
        !          1572: Millicent Fenwick      41 N. Bridge St., Somerville 08876      201-722-8200
        !          1573: Edwin B. Forsythe      301 Mill St., Moorestown 08057  609-235-6622
        !          1574: Matthew J. Rinaldo     1961 Morris Ave., Union 07083   201-687-4235
        !          1575: .TE
        !          1576: .ps 10
        !          1577: .vs 12p
        !          1578: .sp
        !          1579: .fi
        !          1580: This is a paragraph of normal text placed here only to indicate where
        !          1581: the left and right margins are.  In this way the reader can judge
        !          1582: the appearance of centered tables or expanded tables, and observe
        !          1583: how such tables are formatted.
        !          1584: .IN
        !          1585: \&\*.TS
        !          1586: \&expand;
        !          1587: \&c s s s
        !          1588: \&c c c c
        !          1589: \&l l n n\*.
        !          1590: \&Bell Labs Locations
        !          1591: \&Name\*TAddress\*TArea Code\*TPhone
        !          1592: \&Holmdel\*THolmdel, N\*. J\*. 07733\*T201\*T949-3000
        !          1593: \&Murray Hill\*TMurray Hill, N\*. J\*. 07974\*T201\*T582-6377
        !          1594: \&Whippany\*TWhippany, N\*. J\*. 07981\*T201\*T386-3000
        !          1595: \&Indian Hill\*TNaperville, Illinois 60540\*T312\*T690-2000
        !          1596: \&\*.TE
        !          1597: .ne 1.3i
        !          1598: .OU
        !          1599: .TS
        !          1600: expand;
        !          1601: c s s s
        !          1602: c c c c
        !          1603: l l n n.
        !          1604: Bell Labs Locations
        !          1605: Name   Address Area Code       Phone
        !          1606: Holmdel        Holmdel, N. J. 07733    201     949-3000
        !          1607: Murray Hill    Murray Hill, N. J. 07974        201     582-6377
        !          1608: Whippany       Whippany, N. J. 07981   201     386-3000
        !          1609: Indian Hill    Naperville, Illinois 60540      312     690-2000
        !          1610: .TE
        !          1611: .br
        !          1612: .ps 8
        !          1613: .vs 9p
        !          1614: .ne 5i
        !          1615: .IN
        !          1616: \&\*.TS
        !          1617: \&box;
        !          1618: \&cb   s   s   s
        !          1619: \&c | c | c   s
        !          1620: \&ltiw(1i) | ltw(2i) | lp8 | lw(1\*.5i)p8\*.
        !          1621: \&Some Interesting Places
        !          1622: \&_
        !          1623: \&Name\*TDescription\*TPractical Information
        !          1624: \&_
        !          1625: \&T{
        !          1626: \&American Museum of Natural History
        !          1627: \&T}\*TT{
        !          1628: \&The collections fill 11\*.5 acres (Michelin) or 25 acres (MTA)
        !          1629: \&of exhibition halls on four floors\*.  There is a full-sized replica
        !          1630: \&of a blue whale and the world's largest star sapphire (stolen in 1964)\*.
        !          1631: \&T}\*THours\*T10-5, ex\*. Sun 11-5, Wed\*. to 9
        !          1632: \&\e^\*T\e^\*TLocation\*TT{
        !          1633: \&Central Park West & 79th St\*.
        !          1634: \&T}
        !          1635: \&\e^\*T\e^\*TAdmission\*TDonation: $1\*.00 asked
        !          1636: \&\e^\*T\e^\*TSubway\*TAA to 81st St\*.
        !          1637: \&\e^\*T\e^\*TTelephone\*T212-873-4225
        !          1638: \&_
        !          1639: \&Bronx Zoo\*TT{
        !          1640: \&About a mile long and \*.6 mile wide, this is the largest zoo in America\*.
        !          1641: \&A lion eats 18 pounds
        !          1642: \&of meat a day while a sea lion eats 15 pounds of fish\*.
        !          1643: \&T}\*THours\*TT{
        !          1644: \&10-4:30 winter, to 5:00 summer
        !          1645: \&T}
        !          1646: \&\e^\*T\e^\*TLocation\*TT{
        !          1647: \&185th St\*. & Southern Blvd, the Bronx\*.
        !          1648: \&T}
        !          1649: \&\e^\*T\e^\*TAdmission\*T$1\*.00, but Tu,We,Th free
        !          1650: \&\e^\*T\e^\*TSubway\*T2, 5 to East Tremont Ave\*.
        !          1651: \&\e^\*T\e^\*TTelephone\*T212-933-1759
        !          1652: \&_
        !          1653: \&Brooklyn Museum\*TT{
        !          1654: \&Five floors of galleries contain American and ancient art\*.
        !          1655: \&There are American period rooms and architectural ornaments saved
        !          1656: \&from wreckers, such as a classical figure from Pennsylvania Station\*.
        !          1657: \&T}\*THours\*TWed-Sat, 10-5, Sun 12-5
        !          1658: \&\e^\*T\e^\*TLocation\*TT{
        !          1659: \&Eastern Parkway & Washington Ave\*., Brooklyn\*.
        !          1660: \&T}
        !          1661: \&\e^\*T\e^\*TAdmission\*TFree
        !          1662: \&\e^\*T\e^\*TSubway\*T2,3 to Eastern Parkway\*.
        !          1663: \&\e^\*T\e^\*TTelephone\*T718-638-5000
        !          1664: \&_
        !          1665: \&T{
        !          1666: \&New-York Historical Society
        !          1667: \&T}\*TT{
        !          1668: \&All the original paintings for Audubon's
        !          1669: \&\*.I
        !          1670: \&Birds of America
        !          1671: \&\*.R
        !          1672: \&are here, as are exhibits of American decorative arts, New York history,
        !          1673: \&Hudson River school paintings, carriages, and glass paperweights\*.
        !          1674: \&T}\*THours\*TT{
        !          1675: \&Tues-Fri & Sun, 1-5; Sat 10-5
        !          1676: \&T}
        !          1677: \&\e^\*T\e^\*TLocation\*TT{
        !          1678: \&Central Park West & 77th St\*.
        !          1679: \&T}
        !          1680: \&\e^\*T\e^\*TAdmission\*TFree
        !          1681: \&\e^\*T\e^\*TSubway\*TAA to 81st St\*.
        !          1682: \&\e^\*T\e^\*TTelephone\*T212-873-3400
        !          1683: \&\*.TE
        !          1684: .br
        !          1685: .ps \n(PS
        !          1686: .vs \n(VSp
        !          1687: .OU
        !          1688: .fi
        !          1689: .rr 10 11 12 13 14 15 16 17 18 19 20 21 22 98 99
        !          1690: .rr 60 61 62 63 64 65 66 67 68 69 70
        !          1691: .rr 43 44 45 46 47 48 49 50 51 52 53
        !          1692: .rr 83 84 85 86 87 88 89 90 91 92 93
        !          1693: .rr #a
        !          1694: .rr #b
        !          1695: .rr #c
        !          1696: .rr #d
        !          1697: .rr #e
        !          1698: .rr YY
        !          1699: .rr OJ
        !          1700: .rr P
        !          1701: .rr AV CW GW DW FL KN SJ A1 A2 A3 I1 I2 I3
        !          1702: .in 0
        !          1703: .hy 1
        !          1704: .TS
        !          1705: box;
        !          1706: cb   s   s   s
        !          1707: c | c | c   s
        !          1708: ltiw(1i) | ltw(2i) | lp8| lw(1.5i)p8.
        !          1709: Some Interesting Places
        !          1710: _
        !          1711: Name   Description     Practical Information
        !          1712: _
        !          1713: T{
        !          1714: American Museum of Natural History
        !          1715: T}     T{
        !          1716: The collections fill 11.5 acres (Michelin) or 25 acres (MTA)
        !          1717: of exhibition halls on four floors.  There is a full-sized replica
        !          1718: of a blue whale and the world's largest star sapphire (stolen in 1964).
        !          1719: T}     Hours   10-5, ex. Sun 11-5, Wed. to 9
        !          1720: \^     \^      Location        T{
        !          1721: Central Park West & 79th St.
        !          1722: T}
        !          1723: \^     \^      Admission       Donation: $1.00 asked
        !          1724: \^     \^      Subway  AA to 81st St.
        !          1725: \^     \^      Telephone       212-873-4225
        !          1726: _
        !          1727: Bronx Zoo      T{
        !          1728: About a mile long and .6 mile wide, this is the largest zoo in America.
        !          1729: A lion eats 18 pounds
        !          1730: of meat a day while a sea lion eats 15 pounds of fish.
        !          1731: T}     Hours   T{
        !          1732: 10-4:30 winter, to 5:00 summer
        !          1733: T}
        !          1734: \^     \^      Location        T{
        !          1735: 185th St. & Southern Blvd, the Bronx.
        !          1736: T}
        !          1737: \^     \^      Admission       $1.00, but Tu,We,Th free
        !          1738: \^     \^      Subway  2, 5 to East Tremont Ave.
        !          1739: \^     \^      Telephone       212-933-1759
        !          1740: _
        !          1741: Brooklyn Museum        T{
        !          1742: Five floors of galleries contain American and ancient art.
        !          1743: There are American period rooms and architectural ornaments saved
        !          1744: from wreckers, such as a classical figure from Pennsylvania Station.
        !          1745: T}     Hours   Wed-Sat, 10-5, Sun 12-5
        !          1746: \^     \^      Location        T{
        !          1747: Eastern Parkway & Washington Ave., Brooklyn.
        !          1748: T}
        !          1749: \^     \^      Admission       Free
        !          1750: \^     \^      Subway  2,3 to Eastern Parkway.
        !          1751: \^     \^      Telephone       718-638-5000
        !          1752: _
        !          1753: T{
        !          1754: New-York Historical Society
        !          1755: T}     T{
        !          1756: All the original paintings for Audubon's
        !          1757: .I
        !          1758: Birds of America
        !          1759: .R
        !          1760: are here, as are exhibits of American decorative arts, New York history,
        !          1761: Hudson River school paintings, carriages, and glass paperweights.
        !          1762: T}     Hours   T{
        !          1763: Tues-Fri & Sun, 1-5; Sat 10-5
        !          1764: T}
        !          1765: \^     \^      Location        T{
        !          1766: Central Park West & 77th St.
        !          1767: T}
        !          1768: \^     \^      Admission       Free
        !          1769: \^     \^      Subway  AA to 81st St.
        !          1770: \^     \^      Telephone       212-873-3400
        !          1771: .TE
        !          1772: .rr 40
        !          1773: .rr 41
        !          1774: .rr 42
        !          1775: .rr 43
        !          1776: .rr 80
        !          1777: .rr 81
        !          1778: .rr 82
        !          1779: .rr 83
        !          1780: .rr 60
        !          1781: .rr 61
        !          1782: .rr 62
        !          1783: .rr 63
        !          1784: .rr #a
        !          1785: .rr #b
        !          1786: .rr #c
        !          1787: .rr #d
        !          1788: .rr #e
        !          1789: .rr ##
        !          1790: .ne 2i
        !          1791: .fi
        !          1792: .LP
        !          1793: .SH
        !          1794: Acknowledgments.
        !          1795: .PP
        !          1796: Many thanks are due to J. C. Blinn, who has done a large amount
        !          1797: of testing and assisted with the design of the program.
        !          1798: He has also written many of the more intelligible sentences
        !          1799: in this document and helped edit all of it.
        !          1800: All phototypesetting programs on \s-2UNIX\s0 are dependent on the work
        !          1801: of J. F. Ossanna, whose assistance with this program in particular
        !          1802: has been most helpful.
        !          1803: This program is patterned on a table formatter originally
        !          1804: written by J. F. Gimpel.
        !          1805: The assistance of
        !          1806: T. A. Dolotta, B. W. Kernighan, and J. N. Sturman
        !          1807: is gratefully acknowledged.
        !          1808: .SG MH-1274-MEL-troff
        !          1809: .ne 2i
        !          1810: .SH
        !          1811: References.
        !          1812: .IP [1]
        !          1813: J. F. Ossanna,
        !          1814: .I
        !          1815: N\s-2ROFF\s0/T\s-2ROFF\s0 User's Manual,
        !          1816: .R
        !          1817: Computing Science Technical Report No. 54,
        !          1818: Bell Laboratories, 1976.
        !          1819: .IP [2]
        !          1820: K. Thompson and D. M. Ritchie,
        !          1821: ``The U\s-2NIX\s0 Time-Sharing System,''
        !          1822: \fIComm. ACM. \fB17\fR, pp. 365\(mi75 (1974).
        !          1823: .IP [3]
        !          1824: B. W. Kernighan and L. L. Cherry,
        !          1825: ``A System for Typesetting Mathematics,''
        !          1826: \fIComm. ACM. \fB18\fR, pp. 151\(mi57 (1975).
        !          1827: .IP [4]
        !          1828: M. E. Lesk,
        !          1829: .I
        !          1830: Typing Documents on U\s-2NIX\s0,
        !          1831: .R
        !          1832: Bell Laboratories internal memorandum.
        !          1833: .IP [5]
        !          1834: M. E. Lesk and B. W. Kernighan,
        !          1835: .I
        !          1836: Computer Typesetting of Technical Journals on U\s-2NIX\s0,
        !          1837: .R
        !          1838: Computing Science Technical Report No. 44,
        !          1839: Bell Laboratories, July 1976.
        !          1840: .IP [6]
        !          1841: J. R. Mashey and D. W. Smith,
        !          1842: .I
        !          1843: \s-2PWB/MM\s0 \(em Programmer's Workbench Memorandum Macros,
        !          1844: .R
        !          1845: Bell Laboratories memorandum.
        !          1846: .sp 3
        !          1847: .SH
        !          1848: .ce
        !          1849: List of Tbl Command Characters and Words
        !          1850: .LP
        !          1851: .EQ
        !          1852: delim $$
        !          1853: gfont roman
        !          1854: .EN
        !          1855: .TS
        !          1856: center;
        !          1857: cI cI cI
        !          1858: aB lf1 nf1 .
        !          1859: Command        Meaning Section
        !          1860: a A    Alphabetic subcolumn    2
        !          1861: allbox Draw box around all items       1
        !          1862: b B    Boldface item   2
        !          1863: box    Draw box around table   1
        !          1864: c C    Centered column 2
        !          1865: center Center table in page    1
        !          1866: doublebox      Doubled box around table        1
        !          1867: e E    Equal width columns     2
        !          1868: expand Make table full line width      1
        !          1869: f F    Font change     2
        !          1870: i I    Italic item     2
        !          1871: l L    Left adjusted column    2
        !          1872: n N    Numerical column        2
        !          1873: \fInnn\fR      Column separation       2
        !          1874: p P    Point size change       2
        !          1875: r R    Right adjusted column   2
        !          1876: s S    Spanned item    2
        !          1877: t T    Vertical spanning at top        2
        !          1878: tab \fR(\fIx\|\fR)     Change data separator character 1
        !          1879: $fat roman "T{" ~~ fat roman "T}"$     Text block      3
        !          1880: v V    Vertical spacing change 2
        !          1881: w W    Minimum width value     2
        !          1882: \&\s+4.\s0\fIxx\fR     Included \fItroff\fR command    3
        !          1883: \(bv   Vertical line   2
        !          1884: \(bv\|\(bv     Double vertical line    2
        !          1885: \&\s+4\v'4p'^\v'-4p'\s0        Vertical span   2
        !          1886: \e\&\s+4\v'4p'^\v'-4p'\s0      Vertical span   3
        !          1887: \&=    Double horizontal line  2,3
        !          1888: \&$fat "_"$    Horizontal line 2,3
        !          1889: \&$fat "\e\|_"$        Short horizontal line   3
        !          1890: .TE

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