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Annotation of 43BSDReno/share/doc/usd/16.ex/ex.summary, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1980 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)ex.summary  6.1 (Berkeley) 5/30/86
        !             6: .\"
        !             7: .ds p \v'-0.2'.\v'+0.2'
        !             8: .ds U \s-2UNIX\s+2
        !             9: .ds c \v'-0.2':\v'+0.2'
        !            10: .nr PO .25i
        !            11: .nr LL 6.75i
        !            12: .lt 6.75i
        !            13: .ll 6.75i
        !            14: .ds CH
        !            15: .ds LF Computing Services, U.C. Berkeley
        !            16: .ds RF April 3, 1979
        !            17: .de SP
        !            18: .sp 1v
        !            19: ..
        !            20: .nr PI 3n
        !            21: .nr PD 0
        !            22: .ND
        !            23: .ps 12
        !            24: .ft B
        !            25: .ce 1
        !            26: Ex/Edit Command Summary (Version 2.0)
        !            27: .ft R
        !            28: .nr VS 11
        !            29: .nr PS 9
        !            30: .nr HM 0.5i
        !            31: .nr CW
        !            32: .2C
        !            33: .PP
        !            34: .I Ex
        !            35: and
        !            36: .I edit
        !            37: are text editors, used for creating
        !            38: and modifying files of text on the \*U
        !            39: computer system.
        !            40: .I Edit
        !            41: is a variant of
        !            42: .I ex
        !            43: with features designed to
        !            44: make it less complicated
        !            45: to learn and use.
        !            46: In terms of command syntax and effect
        !            47: the editors are essentially identical,
        !            48: and this command summary applies to both.
        !            49: .PP
        !            50: The summary is meant as a quick reference
        !            51: for users already acquainted
        !            52: with
        !            53: .I edit
        !            54: or \fIex\fP.
        !            55: Fuller explanations of the editors are available
        !            56: in the documents
        !            57: .I
        !            58: Edit: A Tutorial
        !            59: .R
        !            60: (a self-teaching introduction) and the
        !            61: .I
        !            62: Ex Reference Manual
        !            63: .R
        !            64: (the comprehensive reference source for
        !            65: both \fIedit\fP and \fIex\fP).
        !            66: Both of these writeups are available in the
        !            67: Computing Services Library.
        !            68: .PP
        !            69: In the examples included with the
        !            70: summary, commands and text entered by
        !            71: the user are printed in \fBboldface\fR to
        !            72: distinguish them from responses printed
        !            73: by the computer.
        !            74: .sp 0.45v
        !            75: .LP
        !            76: .B
        !            77: The Editor Buffer
        !            78: .PP
        !            79: In order to perform its tasks
        !            80: the editor sets aside a temporary
        !            81: work space,
        !            82: called a \fIbuffer\fR,
        !            83: separate from the user's permanent
        !            84: file.
        !            85: Before starting to work on an existing
        !            86: file the editor makes a copy of it in the
        !            87: buffer, leaving the original untouched.
        !            88: All editing changes are made to the
        !            89: buffer copy, which must then
        !            90: be written back to the permanent
        !            91: file in order to update the
        !            92: old version.
        !            93: The buffer disappears
        !            94: at the end of the editing session.
        !            95: .sp 0.45v
        !            96: .LP
        !            97: .B
        !            98: Editing: Command and Text Input Modes
        !            99: .PP
        !           100: .R
        !           101: During an editing session there are
        !           102: two usual modes of operation:
        !           103: \fIcommand\fP mode and \fItext input\fP
        !           104: mode.
        !           105: (This disregards, for the moment,
        !           106: .I open
        !           107: and
        !           108: .I visual
        !           109: modes, discussed below.)
        !           110: In command mode, the editor issues a
        !           111: colon prompt (:)
        !           112: to show that it is ready to
        !           113: accept and execute a command.
        !           114: In text input mode, on the other hand, there is
        !           115: no prompt and the editor merely accepts text to
        !           116: be added to the buffer.
        !           117: Text input mode is initiated by the commands
        !           118: \fIappend\fP, \fIinsert\fP, and \fIchange\fP,
        !           119: and is terminated by typing a period as the
        !           120: first and only character on a line.
        !           121: .sp 0.45v
        !           122: .LP
        !           123: .B
        !           124: Line Numbers and Command Syntax
        !           125: .PP
        !           126: .R
        !           127: The editor keeps track of lines of text
        !           128: in the buffer by numbering them consecutively
        !           129: starting with 1 and renumbering
        !           130: as lines are added or deleted.
        !           131: At any given time the editor is positioned
        !           132: at one of these lines; this position is
        !           133: called the \fIcurrent line\fP.
        !           134: Generally, commands that change the
        !           135: contents of the buffer print the
        !           136: new current line at the end of their
        !           137: execution.
        !           138: .PP
        !           139: Most commands can be preceded by one or two
        !           140: line-number addresses which indicate the lines
        !           141: to be affected.
        !           142: If one number is given the command operates on
        !           143: that line only; if two, on an inclusive range
        !           144: of lines.
        !           145: Commands that can take line-number prefixes also
        !           146: assume default prefixes if none are given.
        !           147: The default assumed by each command is designed
        !           148: to make it convenient to use in many instances
        !           149: without any line-number prefix.
        !           150: For the most part, a command used without a
        !           151: prefix operates on the current line,
        !           152: though exceptions to this rule should be noted.
        !           153: The \fIprint\fP command
        !           154: by itself, for instance, causes
        !           155: one line, the current line, to be
        !           156: printed at the terminal.
        !           157: .PP
        !           158: The summary shows the number of line addresses
        !           159: that can be
        !           160: prefixed to each command as well as
        !           161: the defaults assumed if they are omitted.
        !           162: For example,
        !           163: .I (.,.)
        !           164: means that up to 2 line-numbers may be given,
        !           165: and that if none is given the
        !           166: command operates on the current line.
        !           167: (In the address prefix notation, ``.'' stands
        !           168: for the current line and ``$'' stands for
        !           169: the last line of the buffer.)
        !           170: If no such notation appears, no
        !           171: line-number prefix may be used.
        !           172: .PP
        !           173: Some commands take trailing
        !           174: information;
        !           175: only
        !           176: the more important instances of this
        !           177: are mentioned in the summary.
        !           178: .sp 0.25v
        !           179: .LP
        !           180: .B
        !           181: Open and Visual Modes
        !           182: .PP
        !           183: .R
        !           184: Besides command and text input modes,
        !           185: .I ex
        !           186: and
        !           187: .I edit
        !           188: provide on some CRT terminals other modes of editing,
        !           189: .I open
        !           190: and
        !           191: .I visual .
        !           192: In these modes the cursor can
        !           193: be moved to individual words
        !           194: or characters in a line.
        !           195: The commands then given are very different
        !           196: from the standard editor commands; most do not appear on the screen when
        !           197: typed.
        !           198: .I
        !           199: An Introduction to Display Editing with Vi
        !           200: .R
        !           201: provides a full discussion.
        !           202: .sp 0.25v
        !           203: .LP
        !           204: .B
        !           205: Special Characters
        !           206: .PP
        !           207: .R
        !           208: .fi
        !           209: Some characters take on special meanings
        !           210: when used in context searches
        !           211: and in patterns given to the \fIsubstitute\fP command.
        !           212: For \fIedit\fR, these are ``^'' and ``$'',
        !           213: meaning the beginning and end of a line,
        !           214: respectively.
        !           215: .I Ex
        !           216: has the following additional special characters:
        !           217: .B
        !           218: .ce 1
        !           219: \&.     &     *     [     ]     ~
        !           220: .R
        !           221: To use one of the special characters as its
        !           222: simple graphic representation
        !           223: rather than with its special meaning,
        !           224: precede it by a backslash (\\).
        !           225: The backslash always has a special meaning.
        !           226: .1C
        !           227: .rm LF
        !           228: .rm RF
        !           229: .rm CF
        !           230: .nr FM 0.4
        !           231: .TS
        !           232: cp10 cp10 cp10 cp10
        !           233: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           234: Name   Abbr    Description     Examples
        !           235: .sp 1.75
        !           236: (.)\fBappend   a       T{
        !           237: Begins text input mode,
        !           238: adding lines to the buffer after
        !           239: the line specified. Appending continues
        !           240: until ``.'' is typed alone at the
        !           241: beginning of a new line, followed by
        !           242: a carriage return. \fI0a\fR places
        !           243: lines at the beginning of the buffer.
        !           244: T}     T{
        !           245: .nf
        !           246: \fR:\fBa
        !           247: Three lines of text
        !           248: are added to the buffer
        !           249: after the current line.
        !           250: \*p
        !           251: .R
        !           252: \*c
        !           253: .fi
        !           254: T}
        !           255: .SP
        !           256: \fR(.,.)\fBchange      c       T{
        !           257: Deletes indicated line(s) and
        !           258: initiates text input mode to
        !           259: replace them with new text which follows.
        !           260: New text is terminated the same way
        !           261: as with \fIappend\fR.
        !           262: T}     T{
        !           263: .nf
        !           264: :\fB5,6c
        !           265: Lines 5 and 6 are
        !           266: deleted and replaced by
        !           267: these three lines.
        !           268: \*p
        !           269: .R
        !           270: \*c
        !           271: .fi
        !           272: T}
        !           273: .SP
        !           274: \fR(.,.)\fBcopy \fIaddr        co      T{
        !           275: Places a copy of the specified lines
        !           276: after the line indicated by \fIaddr\fR.
        !           277: The example places a copy of lines 8 through
        !           278: 12, inclusive, after line 25.
        !           279: T}     T{
        !           280: .nf
        !           281: \fR:\fB8,12co 25
        !           282: \fRLast line copied is printed
        !           283: \fR\*c
        !           284: .fi
        !           285: T}
        !           286: .SP
        !           287: \fR(.,.)\fBdelete      d       T{
        !           288: Removes lines from the buffer
        !           289: and prints the current line after the deletion.
        !           290: T}     T{
        !           291: .nf
        !           292: \fR:\fB13,15d
        !           293: \fRNew current line is printed
        !           294: \*c
        !           295: .fi
        !           296: T}
        !           297: .TE
        !           298: .sp 0.5v
        !           299: .TS
        !           300: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           301: T{
        !           302: \fBedit \fIfile\fP
        !           303: .br
        !           304: \fBedit! \fIfile\fP
        !           305: T}     T{
        !           306: e
        !           307: .br
        !           308: e!
        !           309: T}     T{
        !           310: .fi
        !           311: \fRClears the editor buffer and then
        !           312: copies into it the named \fIfile\fR,
        !           313: which becomes the current file.
        !           314: This is a way of shifting to a different
        !           315: file
        !           316: without leaving the editor.
        !           317: The editor issues a warning
        !           318: message if this command is used before
        !           319: saving changes
        !           320: made to the file already in the buffer;
        !           321: using the form \fBe!\fR overrides this protective mechanism.
        !           322: T}     T{
        !           323: .nf
        !           324: \fR:\fBe ch10\fR
        !           325: No write since last change
        !           326: :\fBe! ch10\fR
        !           327: "ch10" 3 lines, 62 characters
        !           328: \*c
        !           329: .fi
        !           330: T}
        !           331: .SP
        !           332: \fBfile \fIname\fR     f       T{
        !           333: \fRIf followed by a \fIname\fR, renames
        !           334: the current file to \fIname\fR.
        !           335: If used without \fIname\fR, prints
        !           336: the name of the current file.
        !           337: T}     T{
        !           338: .nf
        !           339: \fR:\fBf ch9
        !           340: \fR"ch9" [Modified] 3 lines ...
        !           341: :\fBf
        !           342: \fR"ch9" [Modified] 3 lines ...
        !           343: \*c
        !           344: .fi
        !           345: T}
        !           346: .SP
        !           347: (1,$)\fBglobal g       \fBglobal/\fIpattern\fB/\fIcommands     T{
        !           348: .nf
        !           349: :\fBg/nonsense/d
        !           350: \fR\*c
        !           351: .fi
        !           352: T}
        !           353: \fR(1,$)\fBglobal!     g!\fR or \fBv   T{
        !           354: Searches the entire buffer (unless a smaller
        !           355: range is specified by line-number prefixes) and
        !           356: executes \fIcommands\fR on every line with
        !           357: an expression matching \fIpattern\fR.
        !           358: The second form, abbreviated
        !           359: either \fBg!\fR or \fBv\fR,
        !           360: executes \fIcommands\fR on lines that \fIdo
        !           361: not\fR contain the expression \fIpattern\fR.
        !           362: T}     \^
        !           363: .SP
        !           364: \fR(.)\fBinsert        i       T{
        !           365: Inserts new lines of text immediately before the specified line.
        !           366: Differs from
        !           367: .I append
        !           368: only in that text is placed before, rather than after, the indicated line.
        !           369: In other words, \fB1i\fR has the same effect as \fB0a\fR.
        !           370: T}     T{
        !           371: .nf
        !           372: :\fB1i
        !           373: These lines of text will
        !           374: be added prior to line 1.
        !           375: \&.
        !           376: \fR:
        !           377: .fi
        !           378: T}     \^
        !           379: .SP
        !           380: \fR(.,.+1)\fBjoin      j       T{
        !           381: Join lines together, adjusting white space (spaces
        !           382: and tabs) as necessary.
        !           383: T}     T{
        !           384: .nf
        !           385: :\fB2,5j\fR
        !           386: Resulting line is printed
        !           387: :
        !           388: .fi
        !           389: T}     \^
        !           390: .TE
        !           391: .bp
        !           392: .TS
        !           393: cp10 cp10 cp10 cp10
        !           394: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           395: Name   Abbr    Description     Examples
        !           396: .sp 1.75
        !           397: \fR(.,.)\fBlist        l       T{
        !           398: \fRPrints lines in a more
        !           399: unambiguous way than the \fIprint\fR
        !           400: command does. The end of a line,
        !           401: for example, is marked with a ``$'',
        !           402: and tabs printed as ``^I''.
        !           403: T}     T{
        !           404: .nf
        !           405: :\fB9l
        !           406: \fRThis is line 9$
        !           407: \*c
        !           408: .fi
        !           409: T}
        !           410: .TE
        !           411: .sp 0.5v
        !           412: .TS
        !           413: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           414: \fR(.,.)\fBmove \fIaddr\fB     m       T{
        !           415: \fRMoves the specified lines
        !           416: to a position after the line
        !           417: indicated by \fIaddr\fR.
        !           418: T}     T{
        !           419: .nf
        !           420: \fR:\fB12,15m 25\fR
        !           421: New current line is printed
        !           422: \*c
        !           423: .fi
        !           424: T}
        !           425: .SP
        !           426: \fR(.,.)\fBnumber      nu      T{
        !           427: Prints each line preceded
        !           428: by its buffer line number.
        !           429: T}     T{
        !           430: .nf
        !           431: \fR:\fBnu
        !           432: \0\0\fR10\0 This is line 10
        !           433: \*c
        !           434: .fi
        !           435: T}
        !           436: .SP
        !           437: \fR(.)\fBopen  o       T{
        !           438: Too involved to discuss here,
        !           439: but if you enter open mode
        !           440: accidentally, press
        !           441: the \s-2ESC\s0 key followed by
        !           442: \fBq\fR to
        !           443: get back into normal editor
        !           444: command mode.
        !           445: \fIEdit\fP is designed to
        !           446: prevent accidental use of
        !           447: the open command.
        !           448: T}     
        !           449: .SP
        !           450: \fBpreserve    pre     T{
        !           451: Saves a copy of the current buffer contents as though the system had
        !           452: just crashed.  This is for use in an emergency when a
        !           453: .I write
        !           454: command has failed and you don't know how else to save your work.\(dg
        !           455: T}     T{
        !           456: .nf
        !           457: :\fBpreserve\fR
        !           458: File preserved.
        !           459: :
        !           460: .fi
        !           461: T}
        !           462: .SP
        !           463: \fR(.,.)\fBprint       p       Prints the text of line(s).     T{
        !           464: .nf
        !           465: :\fB+2,+3p\fR
        !           466: The second and third lines
        !           467: after the current line
        !           468: :
        !           469: .fi
        !           470: T}
        !           471: .TE
        !           472: .FS
        !           473: \(dg Seek assistance from a consultant as soon as possible
        !           474: after saving a file with the
        !           475: .I preserve
        !           476: command, because the file is saved on system storage space for only one week.
        !           477: .FE
        !           478: .SP
        !           479: .nf
        !           480: .TS
        !           481: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           482: T{
        !           483: .nf
        !           484: \fBquit
        !           485: quit!
        !           486: .fi
        !           487: T}     T{
        !           488: .nf
        !           489: q
        !           490: q!
        !           491: T}     T{
        !           492: .fi
        !           493: \fREnds the editing session.
        !           494: You will receive a
        !           495: warning if you have changed the buffer
        !           496: since last writing its contents
        !           497: to the file. In this event you
        !           498: must either type \fBw\fR to write,
        !           499: or type \fBq!\fR to exit from
        !           500: the editor without saving your changes.
        !           501: T}     T{
        !           502: .nf
        !           503: \fR:\fBq
        !           504: \fRNo write since last change
        !           505: :\fBq!
        !           506: \fR%
        !           507: .fi
        !           508: T}
        !           509: .SP
        !           510: \fR(.)\fBread \fIfile\fP       r       T{
        !           511: .fi
        !           512: \fRPlaces a copy of \fIfile\fR in the
        !           513: buffer after the specified line.
        !           514: Address 0 is permissible and causes
        !           515: the copy of \fIfile\fR to be placed
        !           516: at the beginning of the buffer.
        !           517: The \fIread\fP command does not
        !           518: erase any text already in the buffer.
        !           519: If no line number is specified,
        !           520: \fIfile\fR is placed after the
        !           521: current line.
        !           522: T}     T{
        !           523: .nf
        !           524: \fR:\fB0r newfile
        !           525: \fR"newfile" 5 lines, 86 characters
        !           526: \*c
        !           527: .fi
        !           528: T}
        !           529: .SP
        !           530: \fBrecover \fIfile\fP  rec     T{
        !           531: .fi
        !           532: Retrieves a copy of the editor buffer
        !           533: after a system crash, editor crash,
        !           534: phone line disconnection, or
        !           535: \fIpreserve\fR command.
        !           536: T}
        !           537: .SP
        !           538: \fR(.,.)\fBsubstitute  s       T{
        !           539: .nf
        !           540: \fBsubstitute/\fIpattern\fB/\fIreplacement\fB/
        !           541: substitute/\fIpattern\fB/\fIreplacement\fB/gc
        !           542: .fi
        !           543: \fRReplaces the first occurrence of \fIpattern\fR
        !           544: on a line
        !           545: with \fIreplacement\fP.
        !           546: Including a \fBg\fR after the command
        !           547: changes all occurrences of \fIpattern\fP
        !           548: on the line.
        !           549: The \fBc\fR option allows the user to
        !           550: confirm each substitution before it is
        !           551: made; see the manual for details.
        !           552: T}     T{
        !           553: .nf
        !           554: :\fB3p
        !           555: \fRLine 3 contains a misstake
        !           556: :\fBs/misstake/mistake/
        !           557: \fRLine 3 contains a mistake
        !           558: \*c
        !           559: .fi
        !           560: T}
        !           561: .TE
        !           562: .bp
        !           563: .TS
        !           564: cp10 cp10 cp10 cp10
        !           565: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           566: Name   Abbr    Description     Examples
        !           567: .sp 1.75
        !           568: \fBundo        u       T{
        !           569: .fi
        !           570: \fRReverses the changes made in
        !           571: the buffer by the last buffer-editing
        !           572: command.
        !           573: Note that this example contains
        !           574: a notification about the number of
        !           575: lines affected.
        !           576: T}     T{
        !           577: .nf
        !           578: \fR:\fB1,15d
        !           579: \fR15 lines deleted
        !           580: new line number 1 is printed
        !           581: :\fBu
        !           582: \fR15 more lines in file ...
        !           583: old line number 1 is printed
        !           584: \*c
        !           585: .fi
        !           586: T}
        !           587: .SP
        !           588: \fR(1,$)\fBwrite \fIfile\fR    w       T{
        !           589: .fi
        !           590: \fRCopies data from the buffer onto
        !           591: a permanent file. If no \fIfile\fR
        !           592: is named, the current filename
        !           593: is used.
        !           594: The file is automatically created
        !           595: if it does not yet exist.
        !           596: A response containing the number of
        !           597: lines and characters in the file
        !           598: indicates that the write
        !           599: has been completed successfully.
        !           600: The editor's built-in protections
        !           601: against overwriting existing files
        !           602: will in some circumstances
        !           603: inhibit a write.
        !           604: The form \fBw!\fR forces the
        !           605: write, confirming that
        !           606: an existing file is to be overwritten.
        !           607: T}     T{
        !           608: .nf
        !           609: \fR:\fBw
        !           610: \fR"file7" 64 lines, 1122 characters
        !           611: :\fBw file8
        !           612: \fR"file8" File exists ...
        !           613: :\fBw! file8
        !           614: \fR"file8" 64 lines, 1122 characters
        !           615: \*c
        !           616: .fi
        !           617: T}
        !           618: \fR(1,$)\fBwrite! \fIfile\fP   w!      \^      \^
        !           619: .TE
        !           620: .sp 0.5v
        !           621: .TS
        !           622: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           623: \fR(.)\fBz \fIcount\fP z       T{
        !           624: .fi
        !           625: \fRPrints a screen full of text starting
        !           626: with the line indicated;
        !           627: or, if \fIcount\fR is specified,
        !           628: prints that number of lines.
        !           629: Variants of the \fIz\fR command
        !           630: are described in the manual.
        !           631: T}     
        !           632: .SP
        !           633: \fB!\fIcommand         T{
        !           634: .fi
        !           635: Executes the remainder of the line
        !           636: after \fB!\fR as a \*U command.
        !           637: The buffer is unchanged by this, and
        !           638: control is returned to the editor when
        !           639: the execution of \fIcommand\fR is complete.
        !           640: T}     T{
        !           641: .nf
        !           642: \fR:\fB!date
        !           643: \fRFri Jun 9 12:15:11 PDT 1978
        !           644: !
        !           645: \*c
        !           646: .fi
        !           647: T}
        !           648: .SP
        !           649: \fRcontrol-d           T{
        !           650: .fi
        !           651: Prints the next \fIscroll\fR of text,
        !           652: normally half of a screen. See the
        !           653: manual for details of the \fIscroll\fR
        !           654: option.
        !           655: T}
        !           656: .SP
        !           657: \fR(.+1)<cr>           T{
        !           658: .fi
        !           659: An address alone followed by a carriage
        !           660: return causes the line to be printed.
        !           661: A carriage return by itself prints the
        !           662: line following the current line.
        !           663: T}     T{
        !           664: .nf
        !           665: :\fR<cr>
        !           666: the line after the current line
        !           667: \*c
        !           668: .fi
        !           669: T}
        !           670: .TE
        !           671: .sp 0.5v
        !           672: .TS
        !           673: ltw(1.0i) lt2w(0.40i)fB ltw(3.0i) ltw(1.8i).
        !           674: \fB/\fIpattern\fB/             T{
        !           675: .fi
        !           676: \fRSearches for the next line in which
        !           677: \fIpattern\fR occurs and prints it.
        !           678: T}     T{
        !           679: .nf
        !           680: \fR:\fB/This pattern/
        !           681: \fRThis pattern next occurs here.
        !           682: \*c
        !           683: .fi
        !           684: T}
        !           685: .SP
        !           686: \fB//          T{
        !           687: Repeats the most recent search.
        !           688: T}     T{
        !           689: .nf
        !           690: \fR:\fB//
        !           691: \fRThis pattern also occurs here.
        !           692: \*c
        !           693: .fi
        !           694: T}
        !           695: .SP
        !           696: \fB?\fIpattern\fB?             T{
        !           697: Searches in the reverse direction
        !           698: for \fIpattern\fP.
        !           699: T}     
        !           700: .SP
        !           701: \fB??          T{
        !           702: Repeats the most recent search,
        !           703: moving in the reverse direction
        !           704: through the buffer.
        !           705: T}
        !           706: .TE
        !           707: 

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