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Annotation of coherent/a/usr/man/COHERENT/nroff, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: nroff                        Command                        nroff
        !             4: 
        !             5: 
        !             6: 
        !             7: 
        !             8: Text-formatting language
        !             9: 
        !            10: nnrrooffff [_o_p_t_i_o_n ...] [_f_i_l_e ...]
        !            11: 
        !            12: nnrrooffff   is  the   COHERENT  text-formatter   and  text-formatting
        !            13: language.  By  embedding commands within  files of text,  you can
        !            14: instruct  nnrrooffff to format  text, create  paragraphs, subheadings,
        !            15: headers, footers,  and in general  perform all tasks  required to
        !            16: format text for the printed page or for screen display.
        !            17: 
        !            18: nnrrooffff is designed  to be used with character-display terminals or
        !            19: monospace printers.  The  related program ttrrooffff performs typeset-
        !            20: quality formatting, suitable  for printing on the Hewlett-Packard
        !            21: LaserJet printer or any printer for which the PostScript language
        !            22: has been implemented.   ttrrooffff's formatting language is a superset
        !            23: of that used by nnrrooffff.  Text that you have encoded for formatting
        !            24: by  nnrrooffff will  work with  ttrrooffff, but the  reverse is  not always
        !            25: true.   See  the  Lexicon entry  on  ttrrooffff  for information  that
        !            26: applies to ttrrooffff alone.
        !            27: 
        !            28: ***** nroff Input *****
        !            29: 
        !            30: nnrrooffff  processes each  _f_i_l_e,  or the  standard input  if none  is
        !            31: specified,  and  prints  the  formatted  result on  the  standard
        !            32: output.  The  input must contain formatting  instructions as well
        !            33: as the text to be processed.
        !            34: 
        !            35: Basic  nnrrooffff commands  provide for  such  things as  setting line
        !            36: length,  page length,  and page  offset, generating  vertical and
        !            37: horizontal  motions, indentation,  filling  and adjusting  output
        !            38: lines, and centering.  The great flexibility of nnrrooffff lies in its
        !            39: acceptance   of  user-defined  macros   to  control   almost  all
        !            40: formatting.  For example, the formation of paragraphs, header and
        !            41: footer areas,  and footnotes must all be  implemented by the user
        !            42: via macros.
        !            43: 
        !            44: The  following summarizes  the commands and  options that  can be
        !            45: used  with  nnrrooffff.   Four  types  of  commands  and  options  are
        !            46: described: (1)  command line options; (2)  nnrrooffff's basic commands
        !            47: (also called  _p_r_i_m_i_t_i_v_e_s); (3) escape sequences  that can be used
        !            48: with nnrrooffff; and  (4) nnrrooffff's dedicated number registers, and what
        !            49: information each one keeps.
        !            50: 
        !            51: ***** Command-line Options *****
        !            52: 
        !            53: Command-line options  may be listed  in any order  on the command
        !            54: line.  They are as follows:
        !            55: 
        !            56: -dd   Debug: print each request before execution.  This options is
        !            57:      extremely useful when you are writing new macros.
        !            58: 
        !            59: -ff _n_a_m_e
        !            60:      Write the temporary file in file _n_a_m_e.
        !            61: 
        !            62: 
        !            63: 
        !            64: COHERENT Lexicon                                           Page 1
        !            65: 
        !            66: 
        !            67: 
        !            68: 
        !            69: nroff                        Command                        nroff
        !            70: 
        !            71: 
        !            72: 
        !            73: -kk   Keep: do not erase the temporary file.
        !            74: 
        !            75: -ii   Read from the standard input after reading the given _f_i_l_e_s.
        !            76: 
        !            77: -mm_n_a_m_e
        !            78:      Include  the  macro  file  /uussrr/lliibb/ttmmaacc._n_a_m_e in  the  input
        !            79:      stream.
        !            80: 
        !            81: -nn_N  Number the first page of output _N.
        !            82: 
        !            83: -rr_a_N Set number register _a to the value _N.
        !            84: 
        !            85: -xx   Do not eject to the bottom  of the last page when text ends.
        !            86:      Use this  option when you  wish to use  nnrrooffff interactively.
        !            87:      It, too, is useful when debugging macros.
        !            88: 
        !            89: If the environmental variable NNRROOFFFF is set when nnrrooffff is invoked,
        !            90: its  contents are  prefixed  to list  of command-line  arguments.
        !            91: This let  you set commonly used options  once in the environment,
        !            92: rather than having to retype them for each invocation of nnrrooffff.
        !            93: 
        !            94: ***** Primitives *****
        !            95: 
        !            96: The following  gives the basic commands,  or _p_r_i_m_i_t_i_v_e_s, that are
        !            97: built into nnrrooffff.  These primitives can be assembled into macros,
        !            98: or  can  be written  directly  into the  text  of your  document.
        !            99: Commands  may  begin  either   with  a  period  `.'  or  with  an
        !           100: apostrophe;  the former  causes  a break  (see  .bbrr, below),  the
        !           101: latter does not.
        !           102: 
        !           103: .aabb _m_s_g
        !           104:      Abort: print _m_s_g on the standard error and abort processing.
        !           105: 
        !           106: .aadd [bbccllrr]
        !           107:      Enter adjust mode: that is, insert white space between words
        !           108:      to  create  right-justified  output.   bb  adjusts  for  both
        !           109:      margins; this is the  default.  cc adjusts and centers on the
        !           110:      line.  ll  adjusts, flush with  the left margin.   rr adjusts,
        !           111:      flush with the right margin.
        !           112: 
        !           113: .aaff _R _X
        !           114:      Assign format  _X to number  register _R. The  assigned format
        !           115:      may be one of the following:
        !           116: 
        !           117:      11       Arabic numerals (default)
        !           118:      ii       Lower-case Roman numerals
        !           119:      II       Upper-case Roman numerals
        !           120:      aa       Lower-case alphabetic characters
        !           121:      AA       Upper-case alphabetic characters
        !           122: 
        !           123: 
        !           124: .aamm _X_X
        !           125:      Append the following to macro _X_X. Used like .ddee, below.
        !           126: 
        !           127: 
        !           128: 
        !           129: 
        !           130: COHERENT Lexicon                                           Page 2
        !           131: 
        !           132: 
        !           133: 
        !           134: 
        !           135: nroff                        Command                        nroff
        !           136: 
        !           137: 
        !           138: 
        !           139: .aass _X_X
        !           140:      Append the following to string _X_X. Used like .ddss, below.
        !           141: 
        !           142: .bbpp  Begin a new page.
        !           143: 
        !           144: .bbrr  Break; print any  fraction of a line of text  that is in the
        !           145:      input buffer before reading new text.
        !           146: 
        !           147: .cc22 _c
        !           148:      Set the  no-break control character to  _c. With no argument,
        !           149:      reset it to the default apostrophe.
        !           150: 
        !           151: .cccc _c
        !           152:      Set  the normal  control character to  _c. With  no argument,
        !           153:      reset it to the default period.
        !           154: 
        !           155: .ccee _N
        !           156:      Center _N lines of text (default, one).
        !           157: 
        !           158: .cchh _X_X _N
        !           159:      Change the  location of  the trap  for macro _X_X  to vertical
        !           160:      position _N on the page.  Used like command .wwhh, below.
        !           161: 
        !           162: .ccoo _e_n_d_m_a_r_k
        !           163:      Copy input directly to the output until _e_n_d_m_a_r_k is seen.  If
        !           164:      no _e_n_d_m_a_r_k is given, copy until another .ccoo is seen.
        !           165: 
        !           166: .ccuu  Underline continuously.
        !           167: 
        !           168: .ddaa _X
        !           169:      Divert  and  append  the  following  text  into macro  _X.  A
        !           170:      diversion is ended by a .ddaa command that has no argument.
        !           171: 
        !           172: .ddee _X
        !           173:      Define macro _X. The macro definition is ended by a line that
        !           174:      contains only two periods ``..''.
        !           175: 
        !           176: .ddii _X
        !           177:      Divert the  following text into macro  _X. Diversion is ended
        !           178:      by a .ddii command that has no argument.
        !           179: 
        !           180: .ddss _X _v_a_l_u_e
        !           181:      Define string _X to have the given _v_a_l_u_e.
        !           182: 
        !           183: .eecc _c
        !           184:      Set the escape characer to  _c. With no argument, reset it to
        !           185:      the default backslash character `\'.
        !           186: 
        !           187: .eell _a_c_t_i_o_n
        !           188:      Execute _a_c_t_i_o_n when the  test in an .iiee command fails.  This
        !           189:      command must be used with an .iiee command.
        !           190: 
        !           191: .eemm _X_X
        !           192:      Execute macro _X_X when processing is completed.
        !           193: 
        !           194: 
        !           195: 
        !           196: COHERENT Lexicon                                           Page 3
        !           197: 
        !           198: 
        !           199: 
        !           200: 
        !           201: nroff                        Command                        nroff
        !           202: 
        !           203: 
        !           204: 
        !           205: .eeoo  Escape  off:  turn   off  special  handling  of  all  escape
        !           206:      sequences.
        !           207: 
        !           208: .eevv _N
        !           209:      Change  the environment.   When  followed by  0,  1, 2,  the
        !           210:      command  _p_u_s_h_e_s  that  environment;  when  used  without  an
        !           211:      argument,  the  command  _p_o_p_s  the present  environment  and
        !           212:      returns to the previous environment.
        !           213: 
        !           214: .eexx  Exit from nnrrooffff without further ado.
        !           215: 
        !           216: .ffii  Enter fill mode.
        !           217: 
        !           218: .ffll  Flush; same as .bbrr.
        !           219: 
        !           220: .fftt _X
        !           221:      Change the current font to  _X. nnrrooffff recognizes RR, BB, and II,
        !           222:      for Roman, bold, and italic, respectively.
        !           223: 
        !           224: .iiee _c_o_n_d_i_t_i_o_n _a_c_t_i_o_n
        !           225:      This command tests to see  if _c_o_n_d_i_t_i_o_n is true; if true, it
        !           226:      then  executes  _a_c_t_i_o_n; otherwise,  it  performs the  action
        !           227:      introduced by  an .eell primitive.  This  command must be used
        !           228:      with the .eell command.
        !           229: 
        !           230: .iiff _c_o_n_d_i_t_i_o_n _a_c_t_i_o_n
        !           231:      This command tests to see  if _c_o_n_d_i_t_i_o_n is true; if so, then
        !           232:      _a_c_t_i_o_n  is  executed;  otherwise,  _a_c_t_i_o_n is  ignored.   The
        !           233:      command .iiff  oo applies  if the page  number is odd,  and the
        !           234:      command  .iiff ee  applies  if the  page number  is even.   The
        !           235:      command .iiff nn applies if the text is processed by nnrrooffff, and
        !           236:      the command .iiff tt applies if the text is processed by ttrrooffff.
        !           237:      The command  .iiff ll applies  in landscape mode.   The command
        !           238:      .iiff pp applies to  ttrrooffff PostScript mode.  Note that the last
        !           239:      two conditions are  unique to the COHERENT implementation of
        !           240:      nnrrooffff, and may not be portable to other implementations.
        !           241: 
        !           242: .iigg _X
        !           243:      Ignore all input until macro ._X is called; if no argument is
        !           244:      given, ignore input until two periods ``..''.
        !           245: 
        !           246: .iinn _N_X
        !           247:      Change the normal indentation to  _N units of _X scale.  _X can
        !           248:      be uu or ii, for  _m_a_c_h_i_n_e _u_n_i_t_s or _i_n_c_h_e_s, respectively.  If _N
        !           249:      is used without _X, nnrrooffff assumes the indentation to be given
        !           250:      in  number of  character-widths (in picas,  or tenths  of an
        !           251:      inch).  Default indentation is zero.
        !           252: 
        !           253: .iitt _N _X_X
        !           254:      Set an  input trap to  execute macro _X_X after  _N input lines
        !           255:      (not counting request lines).
        !           256: 
        !           257: .llcc _c
        !           258:      Set  the leader  dot  character to  _c. When  nnrrooffff sees  the
        !           259:      escape sequence \aa, it fills space to the next tab stop with
        !           260: 
        !           261: 
        !           262: COHERENT Lexicon                                           Page 4
        !           263: 
        !           264: 
        !           265: 
        !           266: 
        !           267: nroff                        Command                        nroff
        !           268: 
        !           269: 
        !           270: 
        !           271:      the leader  dot character.  llcc with  no argument tells nnrrooffff
        !           272:      to use spaces to fill leaders.
        !           273: 
        !           274: .llll _N_X
        !           275:      Set the line length.  Used like the .iinn command, above.
        !           276: 
        !           277: .llss _X
        !           278:      Leave spaces;  insert _X vertical  spaces after each  line of
        !           279:      text.  Default is zero.
        !           280: 
        !           281: .lltt _N_X
        !           282:      Length of title.  Used like the .iinn command, above.
        !           283: 
        !           284: .nnaa  Enter no-adjust mode.  Line lengths are not changed.
        !           285: 
        !           286: .nnee _N_X
        !           287:      Confirm that  at least _N  portions of _X units  of measure of
        !           288:      vertical  space are  needed before the  next trap.   If this
        !           289:      amount of space is not  available, then move the text to the
        !           290:      top  of the  next page.   _X  can be  ii or  vv, for  inches or
        !           291:      vertical  spaces,  respectively.  This  command  is used  in
        !           292:      display  macros  and in  paragraph  macros  to help  prevent
        !           293:      widows and orphans.
        !           294: 
        !           295: .nnff  Enter  no-fill mode;  no right  justification  is performed,
        !           296:      although  line lengths  are changed  to  approximate uniform
        !           297:      line length.
        !           298: 
        !           299: .nnhh  Turn off hyphenation.   nnrrooffff hyphenates according to built-
        !           300:      in algorithms  that are  correct most  of the time,  but not
        !           301:      always.
        !           302: 
        !           303: .nnrr _X _N_1 _N_2
        !           304:      Set  number  register   _X  to  value  _N_1;  set  its  default
        !           305:      increment/decrement  to _N_2.  For  example, .nnrr  XX  22 33  sets
        !           306:      number register XX to 2, and sets its default increment to 3.
        !           307: 
        !           308: .nnss  No-space mode.
        !           309: 
        !           310: .nnxx _f_i_l_e
        !           311:      Terminate  processing of  the current  input file  and begin
        !           312:      processing _f_i_l_e instead.
        !           313: 
        !           314: .ppll _N_X
        !           315:      Set the page length to _N.  The unit of measure _X can be VV or
        !           316:      ii,  for  vertical  spaces (sixths  of  an  inch) or  inches,
        !           317:      respectively.   The  default  unit  of measure  is  vertical
        !           318:      spaces.
        !           319: 
        !           320: .ppnn _N
        !           321:      Set the page number to _N.
        !           322: 
        !           323: .ppoo _N_X
        !           324:      Set the default page offset to  _N. The unit of measure _X can
        !           325:      be set  to ii,  for inches.  The  default unit of  measure is
        !           326: 
        !           327: 
        !           328: COHERENT Lexicon                                           Page 5
        !           329: 
        !           330: 
        !           331: 
        !           332: 
        !           333: nroff                        Command                        nroff
        !           334: 
        !           335: 
        !           336: 
        !           337:      number of characters.
        !           338: 
        !           339: .rrbb _f_i_l_e
        !           340:      Read binary: read the given _f_i_l_e and copy it directly to the
        !           341:      output without processing.
        !           342: 
        !           343: .rrdd _p_r_o_m_p_t
        !           344:      Read an insertion  from the standard input after issuing the
        !           345:      given _p_r_o_m_p_t.
        !           346: 
        !           347: .rrff _X_X _Y_Y
        !           348:      Rename font _X_X as _Y_Y.
        !           349: 
        !           350: .rrmm _X_X
        !           351:      Remove macro or string _X_X.
        !           352: 
        !           353: .rrnn _X_X _Y_Y
        !           354:      Change the name of a macro or string from _X_X to _Y_Y.
        !           355: 
        !           356: .rrrr _X
        !           357:      Remove register _X.
        !           358: 
        !           359: .rrss  Restore normal space mode.
        !           360: 
        !           361: .ssoo _f_i_l_e
        !           362:      Open _f_i_l_e,  read its contents,  and process them.   When the
        !           363:      end of  _f_i_l_e is reached,  resume processing the  contents of
        !           364:      the present file.
        !           365: 
        !           366: .sspp [|]_N_X
        !           367:      Space down  _N. The unit of  measure _X can be  ii, for inches,
        !           368:      with the  default unit of measure  being vertical spaces, or
        !           369:      sixths of an  inch.  The optional vertical bar `|' indicates
        !           370:      that _N is an absolute value; for example, .sspp |11.55ii means to
        !           371:      move to  1.5 inches below  the top of the  page, whereas .sspp
        !           372:      11.55ii means to move to 1.5 inches below the present position.
        !           373: 
        !           374: .ttaa _N_X ...
        !           375:      Set the tab to _N. The unit of measure _X can be set to ii, for
        !           376:      inches; the default unit of measure is number of characters,
        !           377:      or tenths of  an inch.  A tab setting, of  course, is for an
        !           378:      absolute,  not a  relative,  value.  If  more  than one  tab
        !           379:      setting is  defined, the first defines  the first tabulation
        !           380:      character  on a  text line,  the  second defines  the second
        !           381:      tabulation  character, etc.   Any undefined  tabulations are
        !           382:      thrown away.
        !           383: 
        !           384: .ttcc _X _N
        !           385:      Fill  any unused  space within a  tabulation field  with the
        !           386:      character _X.  If the optional  _N is present,  it specifies a
        !           387:      width for  the character; for example, .ttcc  . .11ii fills tabs
        !           388:      with dots spaced one-tenth of an inch apart.
        !           389: 
        !           390: .ttii _N_X
        !           391:      Temporary indent; indent  only the next line.  Used like the
        !           392: 
        !           393: 
        !           394: COHERENT Lexicon                                           Page 6
        !           395: 
        !           396: 
        !           397: 
        !           398: 
        !           399: nroff                        Command                        nroff
        !           400: 
        !           401: 
        !           402: 
        !           403:      .iinn command, above.
        !           404: 
        !           405: .ttll '_l_e_f_t'_c_e_n_t_e_r'_r_i_g_h_t'
        !           406:      Set  a three-part  title, with  _l_e_f_t  being set  flush left,
        !           407:      _c_e_n_t_e_r being centered on the line, and _r_i_g_h_t being set flush
        !           408:      right.   Note the  use of  the  apostrophes to  separate the
        !           409:      fields; the apostrophes for an undefined field must still be
        !           410:      present, or a syntax error will be generated.
        !           411: 
        !           412: .ttmm _m_e_s_s_a_g_e
        !           413:      Print _m_e_s_s_a_g_e  on the standard error  device.  This is often
        !           414:      used  with  .iiff   or  .iiee  commands  to  indicate  an  error
        !           415:      condition.
        !           416: 
        !           417: .ttrr _x_y
        !           418:      Translate character _x to _y on output.
        !           419: 
        !           420: .uull _N
        !           421:      Underline the next _N lines.
        !           422: 
        !           423: .vvss _N_p
        !           424:      Reset the  normal vertical spacing to _N  points pp. One point
        !           425:      equals 1/72 of an inch; the default setting is 12 points, or
        !           426:      1/6 of an inch.
        !           427: 
        !           428: .wwhh _N_X _a_c_t_i_o_n
        !           429:      Set  a trap  to perform  _a_c_t_i_o_n when point  _N is  reached on
        !           430:      every formatted  page.  If _N is negative,  it is measured up
        !           431:      from the bottom of the page.  The unit of measure _X may be ii
        !           432:      or vv, for  inches or number of vertical lines, respectively;
        !           433:      the default unit of measure is vv.
        !           434: 
        !           435: ***** Escape Sequences *****
        !           436: 
        !           437: The following  lists nnrrooffff's  escape sequences, or  commands that
        !           438: suspend or work around the normal operation of nnrrooffff.  All escape
        !           439: sequences are  introduced by  the _e_s_c_a_p_e _c_h_a_r_a_c_t_e_r,  normally the
        !           440: backslash character `\'.
        !           441: 
        !           442: \(_x_x Print  special character  _x_x, as defined  by a  .ddcc request.
        !           443:      nnrrooffff reads default  special character definitions from file
        !           444:      /uussrr/lliibb/rrooffff/nnrrooffff/ssppeecciiaallss.rr.  For   example,  the  escape
        !           445:      sequence \(<= prints the less-than-or-equal-to symbol <_.
        !           446: 
        !           447: \\   Print a  backslash character.  This  can be used  to print a
        !           448:      literal backslash character  in the output text, or to defer
        !           449:      the interpretation of a macro  or string from the time it is
        !           450:      processed to the time that it is called.
        !           451: 
        !           452: \-   Print a minus sign.
        !           453: 
        !           454: \&   Ignore what is normally a command string.
        !           455: 
        !           456: \$_N  Call macro argument _N.
        !           457: 
        !           458: 
        !           459: 
        !           460: COHERENT Lexicon                                           Page 7
        !           461: 
        !           462: 
        !           463: 
        !           464: 
        !           465: nroff                        Command                        nroff
        !           466: 
        !           467: 
        !           468: 
        !           469: \''  Introduce a comment within your text.  All text to the right
        !           470:      of  this escape  sequence will  be  ignored by  nnrrooffff.  This
        !           471:      sequence  must read  .\'' when  used at  the beginning  of a
        !           472:      line.
        !           473: 
        !           474: \*_S  Call string _S.
        !           475: 
        !           476: \*(_S_T
        !           477:      Call string _S_T.
        !           478: 
        !           479: \aa   Fill  the  space  to the  next  tab  stop  with leader  dots
        !           480:      (normally `.').
        !           481: 
        !           482: \ee   Print the escape character in the output text.
        !           483: 
        !           484: \ff_X  Set font to _X; this can  be either RR, II, BB, or PP, for Roman,
        !           485:      _i_t_a_l_i_c, bboolldd, or previous font, respectively.
        !           486: 
        !           487: \hh'[|]_N_X'
        !           488:      Move horizontally by _N units of _X. If _N is positive, move to
        !           489:      the  right; if  negative,  move to  the left.   The unit  of
        !           490:      measure _X may be ii,  for inches; the default unit of measure
        !           491:      is character-widths.  When  the optional vertical bar `|' is
        !           492:      used, move to an absolute position on the line.  For example
        !           493:      \hh'|11.55ii'  moves to  1.5  inches to  the right  of the  left
        !           494:      margin, whereas  \hh'11.55ii' moves 1.5  inches to the  right of
        !           495:      the current position.
        !           496: 
        !           497: \ll'_N_X'
        !           498:      Draw  a horizontal  line _N  units  of _X  long.  The  unit of
        !           499:      measure _X may be ii,  for inches; the default unit of measure
        !           500:      is character-widths.
        !           501: 
        !           502: \LL'_N_X'
        !           503:      Draw a vertical line; used like \ll, above.
        !           504: 
        !           505: \nn_X  Read the value of number register _X.
        !           506: 
        !           507: \nn(_X_Y
        !           508:      Read the value of number register _X_Y.
        !           509: 
        !           510: \oo'_c_h_a_r_s'
        !           511:      Overstrike the given _c_h_a_r_s, centered on the widest.
        !           512: 
        !           513: \tt   Print a tab.
        !           514: 
        !           515: \vv'_N_X'
        !           516:      Vertical  motion; move  _N units  of _X  vertically.  If  _N is
        !           517:      positive,  move down;  if negative,  move  up.  The  unit of
        !           518:      measure  _X may  be ii  or  vv, for  inches or  vertical spaces
        !           519:      (sixths  of an  inch),  respectively.  The  default unit  of
        !           520:      measure is vv.
        !           521: 
        !           522: \ww'_a_r_g_u_m_e_n_t'
        !           523:      Measure the width of _a_r_g_u_m_e_n_t.  For example
        !           524: 
        !           525: 
        !           526: COHERENT Lexicon                                           Page 8
        !           527: 
        !           528: 
        !           529: 
        !           530: 
        !           531: nroff                        Command                        nroff
        !           532: 
        !           533: 
        !           534: 
        !           535:              \w'stuff and nonsense'
        !           536: 
        !           537:      measures the width of the phrase ssttuuffff aanndd nnoonnsseennssee; or
        !           538: 
        !           539:              \w'\$1'
        !           540: 
        !           541:      measures the width of  the first argument passed to a macro,
        !           542:      whatever that  argument might happen to  be.  Therefore, the
        !           543:      command  .iinn \ww'\$11'  will  indent a  line by  the width  of
        !           544:      argument 1.
        !           545: 
        !           546: \XX_d_d Output the character with hexadecimal value _d_d, where _d_d are
        !           547:      two hexadecimal digits.
        !           548: 
        !           549: \zz_c  Print character _c with zero width.
        !           550: 
        !           551: \<nneewwlliinnee>
        !           552:      Ignore this <nneewwlliinnee> character.
        !           553: 
        !           554: \{   Begin conditional commands; used after an .iiff, an .iiee, or an
        !           555:      .eell command.
        !           556: 
        !           557: \{\  Begin  conditional   commands,  and  ignore   the  following
        !           558:      carriage return.
        !           559: 
        !           560: \}   End conditional commands.
        !           561: 
        !           562: ***** Dedicated Number Registers *****
        !           563: 
        !           564: The following  lists the number registers  that are predefined in
        !           565: nnrrooffff.  You can read or reset these registers to suit the need of
        !           566: any special formats that you wish to devise.
        !           567: 
        !           568: .$  Number of arguments in a call to a macro.
        !           569: 
        !           570: %   Present page number.
        !           571: 
        !           572: ddyy  Day of the month, as set by COHERENT.
        !           573: 
        !           574: .ii  Present level of indentation.
        !           575: 
        !           576: .ll  Present line length.
        !           577: 
        !           578: mmoo  Month, as set by COHERENT.
        !           579: 
        !           580: .oo  Present page offset.
        !           581: 
        !           582: .pp  Page length.
        !           583: 
        !           584: yyrr  Year, as set by COHERENT.
        !           585: 
        !           586: ***** Printer Configuration *****
        !           587: 
        !           588: nnrrooffff  reads several  files in  directory  /uussrr/lliibb/rrooffff/nnrrooffff to
        !           589: find  printer-specific information.   It reads  special character
        !           590: 
        !           591: 
        !           592: COHERENT Lexicon                                           Page 9
        !           593: 
        !           594: 
        !           595: 
        !           596: 
        !           597: nroff                        Command                        nroff
        !           598: 
        !           599: 
        !           600: 
        !           601: definitions from  file ssppeecciiaallss.rr. If file  ffoonnttss.rr exists, nnrrooffff
        !           602: reads  font information  from it;  nnrrooffff understands  only Roman,
        !           603: bold and  italic fonts, but  .rrff requests may  define alternative
        !           604: font  names.   If  file  .pprree  exists,  nnrrooffff copies  it  at  the
        !           605: beginning of  the output.  If file .ppoosstt  exists, nnrrooffff copies it
        !           606: at the  end of  the output.  In  landscape mode, nnrrooffff  looks for
        !           607: files  .pprree_llaanndd and  .ppoosstt_llaanndd instead.   You can  change these
        !           608: files as  desired to  include printer-specific commands  in nnrrooffff
        !           609: output.
        !           610: 
        !           611: ***** Miscellaneous *****
        !           612: 
        !           613: The -mmss macro package is kept in file /uussrr/lliibb/ttmmaacc.ss. The macros
        !           614: in this  package are more than sufficient  for most ordinary text
        !           615: processing.   Beginners should  work through  this  macro package
        !           616: rather than trying to deal at once with the basic program.
        !           617: 
        !           618: The  tutorial  to  nnrrooffff, which  is  included  with this  manual,
        !           619: provides  a detailed  introduction to  nnrrooffff. Error  messages for
        !           620: nnrrooffff appear in the appendix to this manual.
        !           621: 
        !           622: ***** Files *****
        !           623: 
        !           624: /ttmmpp/rrooff* -- Temporary files
        !           625: /uussrr/lliibb/ttmmaacc.* -- Standard macro packages
        !           626: /uussrr/lliibb/rrooffff/nnrrooffff/ -- Support files directory
        !           627: /uussrr/lliibb/rrooffff/nnrrooffff/.pprree --  Output prefix
        !           628: /uussrr/lliibb/rrooffff/nnrrooffff/.pprree_llaanndd -- Output prefix, landscape mode
        !           629: /uussrr/lliibb/rrooffff/nnrrooffff/.ppoosstt -- Output suffix
        !           630: /uussrr/lliibb/rrooffff/nnrrooffff/.ppoosstt_llaanndd -- Output suffix, landscape mode
        !           631: /uussrr/lliibb/rrooffff/nnrrooffff/ffoonnttss.rr -- Alternative font name definitions
        !           632: /uussrr/lliibb/rrooffff/nnrrooffff/ssppeecciiaallss.rr -- Special character definitions
        !           633: 
        !           634: ***** See Also *****
        !           635: 
        !           636: ccooll, ccoommmmaannddss, ddeerrooffff, mmaann, mmss, ttrrooffff
        !           637: _n_r_o_f_f, _T_h_e _T_e_x_t-_F_o_r_m_a_t_t_i_n_g _L_a_n_g_u_a_g_e, tutorial
        !           638: 
        !           639: 
        !           640: 
        !           641: 
        !           642: 
        !           643: 
        !           644: 
        !           645: 
        !           646: 
        !           647: 
        !           648: 
        !           649: 
        !           650: 
        !           651: 
        !           652: 
        !           653: 
        !           654: 
        !           655: 
        !           656: 
        !           657: 
        !           658: COHERENT Lexicon                                          Page 10
        !           659: 
        !           660: 

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