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   1This file describes recent user-visible changes in groff.  Bug fixes are not
   2described.  There are more details in the man and info pages.
   3
   4VERSION 1.19.2
   5==============
   6
   7Troff
   8-----
   9
  10o Analogously to the .ft and \f pair, two new requests `gcolor' and
  11  `fcolor' (which pair with \m and \M, respectively) have been added to
  12  set the glyph and background colours.
  13
  14o A new read-only, string-valued register `.sty' returns the name of the
  15  current style.
  16
  17o Two new conditional operators `F <name>' and `S <name>' have been added.
  18  `F' is true if a font <name> exists.  `S' is true if a style <name> has
  19  been registered.
  20
  21o Cyrillic characters have been added to the `utf8' and `html' output
  22  devices.
  23
  24Pic
  25---
  26
  27o The `by' argument in a `for' loop can now be negative if it is additive.
  28  For the multiplicative case, it must be greater than zero.
  29
  30Eqn
  31---
  32
  33o The following keywords aren't new but haven't been documented previously:
  34
  35    undef NAME    (to undefine a macro)
  36    copy  "FILE"  (a synonym for `include')
  37    space n       (to modify the vertical spacing before and after
  38                   an equation)
  39
  40o The following macros aren't new but haven't been documented previously:
  41
  42    Alpha, ..., Omega   (the same as `ALPHA', ..., `OMEGA')
  43    ldots               (three dots on the base line)
  44    dollar              (a dollar glyph)
  45
  46o The following keywords have been extended.  Again, this isn't new but
  47  hasn't been documented previously:
  48
  49    col n { ... }
  50    lcol n { ... }
  51    rcol n { ... }
  52    ccol n { ... }
  53    pile n { ... }
  54    lpile n { ... }
  55    rpile n { ... }
  56    cpile n { ... }   (set vertical spacing between rows to N)
  57
  58Grohtml
  59-------
  60
  61o This device driver has been raised to beta stage; its set of tags should
  62  be stable now.
  63
  64o New command line option `-s' to set the base point size.
  65
  66o New command line option `-S' to set the split level while generating
  67  multiple files.
  68
  69Grotty
  70------
  71
  72o Experimental support for zero-width and double-width characters.
  73  
  74Gxditview
  75---------
  76
  77o On platforms which have the X Window System this program is now built and
  78  installed automatically.
  79
  80Xtotroff
  81--------
  82
  83o This program to create font definition files for xditview isn't new but
  84  hasn't been installed previously.
  85
  86Groffer
  87-------
  88
  89o A security problem (reported as CAN-2004-0969) has been fixed.
  90
  91Gdiffmk
  92-------
  93
  94o A new script contributed by Mike Bianchi.  It compares two groff, nroff,
  95  or troff documents and creates an output with added margin characters
  96  (using `.mc') to indicate the differences.
  97
  98Pdfroff
  99-------
 100
 101o A new wrapper script contributed by Keith Marshall to easily create PDF
 102  documents with groff.
 103
 104Macro packages
 105--------------
 106
 107o ms.tmac
 108
 109  . Support for fractional point sizes: A value for the `PS', `VS', `FPS',
 110    and `VPS' register larger than or equal to 1000 is always divided by
 111    1000.  For example, `.nr PS 10250' sets the document's font size to
 112    10.25 points.
 113
 114  . The `Ds' and `De' macros provided in ms since groff version 1.19 have
 115    been removed; the equivalent `DS' and `DE' macros should be used
 116    instead.  X11 documents which actually use `Ds' and `De' always load a
 117    specific macro file from the X11 distribution (`macros.t') which
 118    provides proper definitions for the two macros.
 119
 120  . The following registers have been added for improving layout control:
 121
 122    PORPHANS
 123      Defines number of lines following `LP', `PP', `QP', `IP' or `XP' which
 124      must be kept together, before any automatic page break.
 125
 126    HORPHANS
 127      Sets number of lines of following paragraph which must be kept with a
 128      heading, defined by `NH' or `SH', before any automatic page break.
 129
 130    GROWPS
 131      Sets the first level of heading (set with `NH') which will keep the
 132      same point size as body text.
 133
 134    PSINCR
 135      Sets the point size increment for each level of heading (set with
 136      `NH'), below the threshold level set by `GROWPS'; e.g., if
 137      \n[PS] = 10, \n[GROWPS] = 3 and \n[PSINCR] = 2.0p, then `.NH 1' will
 138      produce 14pt headings, `.NH 2' will produce 12pt, and all other levels
 139      will remain at 10pt (because \n[PS] = 10).
 140
 141  . The `SH' macro now accepts a numeric argument, to make heading size
 142    match that of `NH' with same argument value when the `GROWPS'/`PSINCR'
 143    feature is enabled.
 144
 145  Please refer to the documentation of the ms package for other, minor
 146  improvements.
 147
 148o me.tmac
 149
 150  The section type set with the `++' request is available in the `_M'
 151  register.  This isn't new but hasn't been documented before.
 152
 153o www.tmac
 154
 155  The `HR' macro no longer causes an empty line for non-HTML devices.
 156
 157  A new macro `HEAD' has been added to directly add data to the
 158  <head>...</head> block.
 159
 160  New macros `OLS' and `OLE' to start and end an ordered list.
 161
 162  New macros `DLS' and `DLE' to start and end a definition list.
 163
 164Pdfmark
 165-------
 166
 167o A new macro package contributed by Keith Marshall which implements PDF
 168  marks.  This is in alpha stage currently.
 169
 170Miscellaneous
 171-------------
 172
 173o Two new keywords to the DESC file have been added which are needed for
 174  grohtml: `image_generator' and `unscaled_charwidths'.  The former gives
 175  the name of the program which creates PNG images, and the latter makes
 176  troff always use unscaled character widths.
 177
 178
 179VERSION 1.19.1
 180==============
 181
 182Groff
 183-----
 184
 185o The argument of the command line option `-I' is now also passed to troff
 186  and grops, specifying a directory to search for files on the command line,
 187  files named in `so' and `psbb' requests, and files named in \X'ps: file'
 188  and \X'ps: import' escapes.
 189
 190o If option `-V' is used more than once, the commands will be both printed
 191  on standard error and run.
 192
 193Troff
 194-----
 195
 196o Two new read-only, string-valued registers `.m' and `.M' return the
 197  name of the current drawing and background color, respectively.
 198
 199o New read-only register `.U' which is set to 1 if in safer mode and set
 200  to 0 if in unsafe mode.
 201
 202o An input encoding file for latin-5 (a.k.a. ISO 8859-9) has been added.
 203  Example use:
 204
 205    groff -Tdvi -mlatin5 my_file > my_file.dvi
 206
 207  Note that some output devices don't support all glyphs of this encoding.
 208
 209o If the `return' request is called with an argument, it exits twice,
 210  namely the current macro and the macro one level higher.  This is
 211  used to define a wrapper macro for `return' in trace.tmac.
 212
 213o For completeness, two new requests have been added: `dei1' and `ami1'.
 214  They are equivalent to `dei' and `ami', respectively, but the macros
 215  are executed with compatibility mode off (similar to `de1' and `am1').
 216
 217o New command line option `-I' to specify a directory for files (both
 218  those on the command line and those named in `psbb' requests).  This is
 219  also handled by the groff wrapper program.
 220
 221o Since version 1.19 you can say `.vs 0'.  Older versions emit a warning
 222  and convert this to `.vs \n[.V]'.
 223
 224  This hasn't been documented properly.  Note that `.vs 0' isn't saved in a
 225  diversion since it doesn't result in vertical motion.
 226
 227Pic
 228___
 229
 230o Dashed and dotted ellipses have been implemented.
 231
 232Tbl
 233---
 234
 235o New key character `x' to make tbl call a user-defined macro on a table
 236  cell.  Patch by Heinz-Jürgen Oertel <hj.oertel@surfeu.de>.
 237
 238Grap2graph
 239----------
 240
 241o A new script contributed by Eric S. Raymond <esr@thyrsus.com>.  It
 242  converts a grap diagram into a cropped image.  Since it uses gs and the
 243  PNM library, virtually all graphics formats are available for output.
 244  [Note that the grap program itself isn't part of the groff package;
 245  see the file MORE.STUFF how to obtain grap.]
 246
 247Grohtml
 248-------
 249
 250o New option `-j' to emit output splitted into multiple files.
 251
 252Grops
 253-----
 254
 255o New command line option `-I' to specify a directory to search for files
 256  on the command line and files named in \X'ps: import' and \X'ps: file'
 257  escapes.  This is also handled by the groff wrapper program.
 258
 259o The default value for the `broken' keyword in the DESC file is now 0.
 260
 261Grolj4
 262------
 263
 264o A new man page `lj4_font(5)' documents how fonts are accessed with
 265  grolj4.
 266
 267o The built-in fonts for LJ4 and newer PCL 5 devices have been completely
 268  revised, mainly to access as much glyphs as possible.  The provided
 269  metric files should be compatible with recent PCL 5 printers also.
 270  Additionally, font description files have been added for the Arial and
 271  Times New Roman family, the MS symbol, and Wingdings fonts.
 272
 273Afmtodit
 274--------
 275
 276o New option `-x' to prevent use of built-in Adobe Glyph List.
 277
 278Hpftodit
 279--------
 280
 281o Completely revised to handle HP TrueType metric files also.  See the
 282  hpftodit manual page for more details.
 283
 284Groffer
 285-------
 286
 287o This version is a rewrite of groffer in many parts, but it is kept in
 288  the old single script style.
 289
 290  New options: --text, --mode text, --tty-viewer, --X, --mode X,
 291  --X-viewer, --html, --mode html, --html-view, --apropos-data,
 292  --apropos-devel, --apropos-progs.
 293
 294  New documentation file: README_SH.
 295
 296  Enhancement of the configuration files and the `apropos' handling.
 297
 298Macro Packages
 299--------------
 300
 301o www.tmac: New macro `JOBNAME' to split output into multiple files.
 302
 303o In mdoc, multiple calls to `.Lb' are now supported in the LIBRARY
 304  section.
 305
 306
 307VERSION 1.19
 308============
 309
 310Troff
 311-----
 312
 313o Input encoding files for latin-9 (a.k.a. latin-0 and ISO 8859-15) and
 314  latin-2 (ISO 8859-2) have been added.  Example use:
 315
 316    groff -Tdvi -mlatin9 my_file > my_file.dvi
 317
 318  You still need proper fonts with the necessary glyphs.  Out of the box,
 319  the groff package supports latin-9 only for -Tps, -Tdvi, and -Tutf8,
 320  and latin-2 only for -Tdvi and -Tutf8.
 321
 322o Composite glyphs are now supported.  To do this, a subset of the Adobe
 323  Glyph List (AGL) Algorithm as described in
 324
 325    http://partners.adobe.com/asn/tech/type/unicodegn.jsp
 326
 327  is used to construct glyph names based on Unicode character codes.  The
 328  existing groff glyph names are frozen; no glyph names which can't be
 329  constructed algorithmically will be added in the future.
 330
 331  The \[...] escape sequence has been extended to specify multiple glyph
 332  components.  Example:
 333
 334    \[A ho]
 335
 336  this accesses a glyph with the name `u0041_0328'.
 337
 338  Some groff glyphs which are useful as composites map to `wrong' Unicode
 339  code points.  For example, `ho' maps to U+02DB which is a spacing
 340  ogonek, whereas a non-spacing ogonek U+0328 is needed for composite
 341  glyphs.  The new request
 342
 343    .composite from to
 344
 345  will change the mapping while a composite glyph name is constructed.
 346  To make \[A ho] yield the expected result,
 347
 348    .composite ho u0328
 349
 350  is needed.  [The new file `composite.tmac' loaded at start-up already
 351  contains proper calls to `.composite'.]
 352
 353  Please refer to the info pages of groff and to the groff_char man page
 354  for more details.
 355
 356o A new request `fschar' has been added to define font-specific fallback
 357  characters.  They are searched after the list of fonts declared with the
 358  `fspecial' request but before the list of fonts declared with `special'.
 359
 360o Fallback characters defined with `fschar' can be removed with the
 361  new `rfschar' request.
 362
 363o A new request `schar' has been added to define global fallback
 364  characters.  They are searched after the list of fonts declared with the
 365  `special' request but before the already mounted special fonts.
 366
 367o In groff versions 1.18 and 1.18.1, \D'f ...' didn't move the current
 368  point horizontally.  Despite of being silly, this change has been
 369  reverted for backwards compatibility.  Consequently, the intermediate
 370  output command `Df' also moves the position horizontally again.
 371
 372  \D'f ...' is deprecated since it depends on the horizontal resolution of
 373  the output device (given with the `hor' parameter in the DESC file).
 374  Use the new \D'Fg ...' escape instead.
 375
 376o For orthogonality, new \D subcommands to change the fill color are
 377  available:
 378
 379    \D'Fr ...' (rgb)
 380    \D'Fc ...' (cmy)
 381    \D'Fg ...' (gray)
 382    \D'Fk ...' (cmyk)
 383    \D'Fd'     (default color)
 384
 385  The arguments are the same as with the `defcolor' request.  The current
 386  position is *not* changed.
 387
 388o The values set with \H and \S are now available in number registers
 389  \n[.height] and \n[.slant], respectively.
 390
 391o The `.pe' number register isn't new but hasn't been documented before.
 392  It is set to 1 during a page ejection caused by the `bp' request.
 393
 394o The new glyph symbol `tno' is a textual variant of `no'.
 395
 396o The new glyph symbol `+e' represents U+03F5, GREEK LUNATE EPSILON SYMBOL.
 397  (Well, it is not really new since it has been previously supported by
 398  grolj4.)  The mapping for both the dvi and lj4 symbol font has been
 399  changed accordingly so that Greek small letter epsilon, `*e', has the
 400  same glyph shape as with other devices.
 401
 402Grops
 403-----
 404
 405o The font `freeeuro.pfa' has been added to provide various default glyph
 406  shapes for `eu' and `Eu'.
 407
 408o It is now possible to access all glyphs in a Type 1 font, not only 256
 409  (provided the font file created by afmtodit has proper entries).  grops
 410  constructs additional encoding vectors on the fly if necessary.
 411
 412o The paper size is now emitted via the %%DocumentMedia and PageSize
 413  mechanisms so that it is no longer required to tell `gv' or `ps2pdf'
 414  about the paper size.  The `broken' flag value 16 omits this feature
 415  (the used PostScript command `setpagedevice' is a LanguageLevel 2
 416  extension) -- if you intend to further process grops output to get an
 417  encapsulated PS (EPS) file you must also use this option.
 418
 419  Patch by Egil Kvaleberg <egil@kvaleberg.no>.
 420
 421o Non-slanted PostScript metrics have been changed again; they no longer
 422  contain negative left italic correction values.  This assures correct
 423  spacing with eqn.
 424
 425Grodvi
 426------
 427
 428o The font cmtex10 has been added as the special font `SC' to the DVI fonts.
 429  It is used as a font-specific special font for CW and CWI.
 430
 431o New options -l and -p to set landscape orientation and the paper size.
 432  grodvi now emits a `papersize' special which is understood by DVI drivers
 433  like dvips.
 434
 435  Consequently, the DESC file should contain a `papersize' keyword.
 436
 437o The glyph shapes for \[*f] and \[*e] have been exchanged with \[+f] and
 438  \[+e], respectively, to be in sync with all other devices.
 439
 440o Glyphs \[HE] and \[DI] have been replaced with \[u2662] and \[u2661],
 441  respectively, since the former two glyphs have a black (filled) shape
 442  which grodvi doesn't provide by default (it never has actually).
 443
 444Grolj4
 445------
 446
 447o The glyphs \[*e] and \[+e] have been exchanged to be in sync with
 448  all other devices.
 449
 450o The glyph \[~=] is now called \[|=].  Similar to other devices, \[~=]
 451  is now another name for glyph \[~~].
 452
 453Grotty
 454------
 455
 456o New option `-r'.  It is similar to the -i option except it tells grotty to
 457  use the `reverse video' attribute to render italic fonts.
 458
 459Pic
 460---
 461
 462o New command `figname' to set the name of a picture's output box in TeX
 463  mode.
 464
 465Refer
 466-----
 467
 468o The environment variable `REFER' to override the name of the default
 469  database isn't new but hasn't been documented before.
 470
 471Soelim
 472------
 473
 474o New option `-r' to avoid emission of `.lf' lines.
 475
 476o New option `-t' to emit TeX comment lines (giving current file and the
 477  line number) instead of `.lf' lines.
 478
 479Afmtodit
 480--------
 481
 482o Unencoded glyphs in an AFM file are output also (since grops can now emit
 483  multiple encoding vectors for a single font).
 484
 485o New option `-m' to prevent negative left italic correction values.
 486
 487o The mapping and encoding file together with file `DESC' are now searched
 488  in the default font directory also.  Please refer to the man page of
 489  afmtodit for more details.
 490
 491Macro Packages
 492--------------
 493
 494o Larry Kollar <kollar@alltel.net> and others made the man macros more
 495  customizable.
 496
 497  . New command line options -rFT, -rIN, and -rSN to set the vertical
 498    location of the footer line, the body text indentation, and the
 499    sub-subheading indentation.
 500
 501  . New command line option -rHY (similar to the ms macros) to control
 502    hyphenation.
 503
 504  . New macros `.PT' and `.BT' to print the header and footer strings.
 505    They can be replaced with a customized version in `man.local'.
 506
 507  . The string `HF' now holds the typeface to print headings and
 508    subheadings.
 509
 510  . Similar to the ms macros, the LT register now defaults to LL if not
 511    explicitly specified on the command line.
 512
 513o troff's start-up file `troffrc' now includes `papersize.tmac' to set
 514  the paper size with the command line option `-dpaper=<size>'.
 515
 516  Possible values for `<size>' are the same as the predefined `papersize'
 517  values in the DESC file (only lowercase; see the groff_font man page)
 518  except a7-d7.  An appended `l' (ell) character denotes landscape
 519  orientation.  Examples: `a4', `c3l', `letterl'.
 520
 521  Most output drivers need additional command line switches `-p' and
 522  `-l' to override the default paper length and orientation as set in
 523  the driver specific DESC file.
 524
 525  For example, use the following for PS output on A4 paper in landscape
 526  orientation:
 527
 528    groff -Tps -dpaper=a4l -P-pa4 -P-l -ms foo.ms > foo.ps
 529
 530
 531VERSION 1.18.1
 532==============
 533
 534Troff
 535-----
 536
 537o The non-slanted PostScript font definition files have been regenerated to
 538  include left and right italic correction values.  Applying those to a
 539  glyph (this is, prepending the glyph with `\,' and appending `\/' to the
 540  glyph) sets the glyph width to the real value given by the horizontal
 541  bounding box values.  Without those escapes, the advance width for the
 542  particular glyph is used (which can differ considerably).
 543
 544  Most users will neither need this feature nor notice a difference in
 545  existing documents (provided \, and \/ is used as advertised, namely for
 546  italic fonts only); its main goal is to improve image generation with
 547  grohtml.
 548
 549  This is an experimental change, and feedback is welcome.
 550
 551Tbl
 552---
 553
 554o Added global option `nospaces' to ignore leading and trailing spaces in
 555  data items.
 556
 557Grolbp
 558------
 559
 560o The option -w (--linewidth) has been added (similar to other device
 561  drivers) to set the default line width.
 562
 563Grn
 564---
 565
 566o Support for b-spline and Bezier curves has been added.
 567
 568Groffer
 569-------
 570
 571o New option `--shell' to select the shell under which groffer shall run.
 572
 573Macro Packages
 574--------------
 575
 576o The string `Am' (producing an ampersand) has been added to mdoc for
 577  compatibility with NetBSD.
 578
 579o `.IX' is now deprecated for mom; you should use `.IQ' (Indent Quit)
 580  instead.
 581
 582o In mom, new inlines `FWD', `BCK', `UP', and `DOWN' deal with horizontal
 583  and vertical movements; please refer to contrib/mom/NEWS for more
 584  details.
 585
 586o New macro ENDNOTES_HDRFTR_CENTER for mom to better control headers.
 587
 588Miscellaneous
 589-------------
 590
 591o The `papersize' keyword in the DESC file now accepts multiple arguments.
 592  It is scanned from left to the right, and the first valid argument is
 593  used. This makes it possible to provide a fallback paper size.
 594
 595  Example:
 596
 597    papersize /etc/papersize a4
 598
 599o A local font directory has been prepended to the default font path; it
 600  defaults to /usr/local/share/groff/site-font.  Similar to the normal
 601  font searching process, files must be placed into a devXXX subdirectory,
 602  e.g.
 603
 604    /usr/local/share/groff/site-font/devps/FOO
 605
 606  for a PostScript font definition file FOO.
 607
 608
 609VERSION 1.18
 610============
 611
 612***************************************************************************
 613*                                                                         *
 614*  PLEASE READ THE CHANGES BELOW REGARDING GROTTY, GROFF'S TTY FRONTEND.  *
 615*                                                                         *
 616***************************************************************************
 617
 618Troff
 619-----
 620
 621o Color support has been added to troff and pic (and to the device drivers
 622  grops, grodvi, grotty, and grohtml -- other preprocessors and drivers will
 623  follow).  A new function `defcolor' defines colors; the escape sequence
 624  `\m' sets the drawing color, the escape sequence `\M' specifies the
 625  background color for closed objects created with \D'...' commands.
 626  `\m[]' and `\M[]' switch back to the previous color.  `\m' and `\M'
 627  correspond to the new troff output command sets starting with `m' and
 628  `DF'.  The device-specific default color is called `default' and can't be
 629  redefined.
 630
 631  Use the `color' request to toggle the usage of colors (default is on); the
 632  read-only register `.color' is 0 if colors are not active, and non-zero
 633  otherwise.
 634
 635  The old `Df' output command is mapped onto `DFg'; all color output
 636  commands don't change the current font position (consequently, `Df'
 637  doesn't either).
 638
 639  Outputting color can be disabled in troff and groff with the option -c
 640  (it is always disabled in compatibility mode).  See the section on grotty
 641  for the GROFF_NO_SGR environment variable also.
 642
 643  For defining color components as fractions between 0 and 1, a new scaling
 644  indicator `f' has been introduced: 1f = 65536u.  For testing whether a
 645  color is defined (with .if and .ie), a new conditional operator `m' is
 646  available.
 647
 648  More details can be found in the groff_diff.7 manual page and in
 649  groff.texinfo.
 650
 651o Similar to \m and \M, \f[] switches back to the previous font.  \fP
 652  (and \f[P]) is still valid for backwards compatibility.
 653
 654o The new escape \F is the same as `.fam'; \F[] switches back to previous
 655  family -- \F[P] selects family `P'.
 656
 657o Two new glyph symbols are available: `eu' is the official Euro symbol;
 658  `Eu' is a font-specific glyph variant.
 659
 660o The new glyph symbols `t+-', `tdi', and `tmu' are textual variants of
 661  `+-', `di', and `mu', respectively.
 662
 663o Latin-1 character 181 (PS name `mu', Unicode name U+00B5 MICRO SIGN) has
 664  got the troff glyph name `mc'.
 665
 666o -Tutf8 is now available on EBCDIC hosts.
 667
 668o Strings can take arguments, using this syntax: \*[foo arg1 arg2 ...].
 669  Example:
 670
 671    .ds xxx This is a \\$1 test.
 672    \*[xxx nice]
 673
 674o It is now possible to have whitespace between the first and second dot (or
 675  the name of the ending macro) to end a macro definition.  Example:
 676
 677    .de !
 678    ..
 679    .
 680    .de foo
 681    .  nop Hello, I'm `foo'.
 682    .  nop I will now define `bar'.
 683    .  de bar !
 684    .    nop Hello, I'm `bar'.
 685    .  !
 686    ..
 687
 688o `.fn' is a new string-valued register which returns the (internal) real
 689  font name; styles and families are properly concatenated.
 690
 691o Three new read/write registers `seconds', `minutes', and `hours' contain
 692  the current time, set at start-up of troff.  Use the `af' request to
 693  control their output format.
 694
 695o The new request `fchar' can be used to provide fallback characters.  It
 696  has the same syntax as the `char' request; the only difference is that a
 697  character defined with `.char' hides the glyph with the same name in the
 698  current font, whereas a character defined with `.fchar' is checked only if
 699  the particular glyph isn't found in the current font.  This test happens
 700  before checking special fonts.
 701
 702o In analogy to the `tmc' request, `.writec' is the same as `.write' but
 703  doesn't emit a final newline.
 704
 705o The new request `itc' is a variant of `.it' for which a line interrupted
 706  with \c counts as one input line.
 707
 708o Two new requests `ds1' and `as1' which are similar to `ds' and `as' but
 709  with compatibility mode disabled during expansion of strings defined by
 710  them.
 711
 712o The syntax of the `substring' request has been changed: The first
 713  character in a string now has index 0, the last character has index -1.
 714  Note that this is an incompatible change.
 715
 716o To emit strings directly to the intermediate output, a new `output'
 717  request has been added; it is similar to `\!' used at the top level.
 718
 719o `.hpf' has been extended.  It can now handle most TeX hyphenation
 720  pattern files without modification.  To do that, the commands \patterns,
 721  \hyphenation, and \endinput are recognized.  Please refer to groff_diff.7
 722  for more information.
 723
 724o `hpfcode' is a new request to provide an input encoding mapping for the
 725  `hpf' request.
 726
 727o The new request `hpfa' appends hyphenation patterns (`hpf' replaces
 728  already existing patterns).
 729
 730o A new request `ami' (append macro indirect) has been added.  The first and
 731  second parameter of `ami' are taken from string registers rather than
 732  directly; this very special request is needed to make `trace.tmac'
 733  independent from the escape character (which might even be disabled).
 734
 735o The new request `sizes' is similar to the `sizes' command in DESC files.
 736  It expects the same syntax; the data must be on a single line, and the
 737  final `0' can be omitted.
 738
 739o `trin' (translate input) is a new request which is similar to `tr' with
 740  the exception that the `asciify' request will use the character code (if
 741  any) before the character translation.  Example:
 742
 743    .trin ax
 744    .di xxx
 745    a
 746    .br
 747    .di
 748    .xxx
 749    .trin aa
 750    .asciify xxx
 751    .xxx
 752
 753  The result is `x a'.  Using `tr', the result would be `x x'.
 754
 755o The request `pvs' isn't new, but hasn't been documented before.  It
 756  adds vertical space after a line has been output.  This makes it an
 757  alternative to the `ls' request to produce double-spaced documents.
 758  The read-only register `.pvs' holds the current amount of the
 759  post-vertical line space.
 760
 761o For compatibility with plan 9's troff, multiple `pi' requests are
 762  supported:
 763
 764    .pi foo
 765    .pi bar
 766
 767  is now equivalent to
 768
 769    .pi foo | bar
 770
 771o A new escape sequence `\O' is available to disable and enable glyph
 772  output.  Please see groff_diff.7 and groff.texinfo for more details.
 773
 774o The escapes `\%', `\&', `\)', and `\:' no longer cause an error in \X;
 775  they are ignored now.  Additionally `\ ' and `\~' are converted to
 776  single space characters.
 777
 778o The default tab distance in nroff mode is now 0.8i to be compatible
 779  with UNIX troff.
 780
 781o Using the latin-1 input character 0xAD (soft hyphen) for the `shc'
 782  request was a bad idea.  Instead, it is now translated to `\%', and
 783  the default hyphenation character is again \[hy].  Note that the glyph
 784  \[shc] is not useful for typographic purposes; it only exists to have
 785  glyph names for all latin-1 characters.
 786
 787Macro Packages
 788--------------
 789
 790o Peter Schaffter <df191@ncf.ca> has contributed a new major macro package
 791  called `mom', mainly for non-scientific writers, which takes care of
 792  many typographic issues.  It comes with a complete reference (in HTML
 793  format) and some examples.  `mom' has been designed to format documents
 794  for PostScript output only.
 795
 796o Two macros `AT' (AT&T) and `UC' (Univ. of California) have been added to
 797  the man macros for compatibility with older BSD releases.
 798
 799o Both the man and mdoc macro packages now use the LL and LT registers for
 800  setting the line and title length, respectively (similar to those
 801  registers in the ms macro package).  If not set on the command line or
 802  in a macro file loaded before the macro package itself, they default to
 803  78n in nroff mode and 6.5i in troff mode.
 804
 805o The `-xwidth' specifier in the mdoc macro package has been removed.  Its
 806  functionality is now integrated directly into `-width'.  Similarly,
 807  `-column' has been extended to provide this functionality also.
 808
 809o A new macro `Ex' has been added to the mdoc macro package to document an
 810  exit status.
 811
 812o The PSPIC macro has been extended to work with DVI output (`pspic.tmac' is
 813  now automatically loaded for -Tdvi), using a dvips special to load the EPS
 814  file.
 815
 816o The trace.tmac package now traces calls to `am' also.  Additionally, it
 817  works in compatibility mode.
 818
 819o `troff.1' has been split.  Differences to UNIX troff are now documented
 820  in the new man page `groff_diff.7'.
 821
 822o `groff_mwww.7' has been renamed to `groff_www.7'.  The file mwww.tmac
 823  has been removed.
 824
 825o `groff_ms.7' has been completely rewritten.  It now contains a complete
 826  reference to the ms macros.
 827
 828o `groff_trace.7' documents the trace macro package.
 829
 830o Changes in www.tmac:
 831
 832    Note that HTML support is still in alpha change, so it is rather likely
 833    that both macro names and macro syntax will change.  Some of the macros
 834    mentioned below aren't really new but haven't been documented properly
 835    before.
 836
 837    The following macros have been renamed:
 838
 839        MAILTO     -> MTO
 840        IMAGE      -> IMG
 841        LINE       -> HR
 842
 843    For consistency, the macros `URL', `FTL', and `MTO' now all have the
 844    address as the first parameter followed by the description.
 845
 846    By default, grohtml generates links to all section headings at the top
 847    of the document.  Use the new `LK' macro to specify a different place.
 848
 849    For specifying the background color and a background image, use the
 850    new macros `BCL' and `BGIMG', respectively.
 851
 852    The macro `NHR' has been added; it suppresses the generation of top and
 853    bottom rules which grohtml emits by default.
 854
 855    The new macro `HX' determines the cut-off point for automatic link
 856    generation to headings.
 857
 858    The image position parameter names in `IMG' have been changed to `-L',
 859    `-R', and `-C'.
 860
 861    New macro `PIMG' for inclusion of a PNG image (it will automatically
 862    convert it into an EPS file if not -Thtml is used).
 863
 864    New macro `MPIMG' for putting a PNG image into the left or right margin
 865    (it will automatically convert it into an EPS file if not
 866    -Thtml is used).
 867
 868    New macros `HnS', `HnE' to start and end a header line block.
 869
 870    New macro `DC' to produce dropcap characters.
 871
 872    New macro `HTL' to generate an HTML title line only but no H1 heading.
 873
 874    New macros `ULS' and `ULE' to start and end an unordered list.  The new
 875    macro `LI' inserts a list item.
 876
 877Groff
 878-----
 879
 880o The new command line option `-c' disables color output (which is always
 881  disabled in compatibility mode).
 882
 883Nroff
 884-----
 885
 886o Two new command line options `-c' and `-C'; the former passes `-c' to
 887  grotty (switching to the old output scheme); the latter passes `-C' to
 888  groff (enabling compatibility mode).
 889
 890Pic
 891---
 892
 893o New keywords `color' (or `colour', `colored', `coloured'), `outline' (or
 894  `outlined'), and `shaded' are available.  `outline' sets the color of the
 895  outline, `shaded' the fill color, and `color' sets both.  Example:
 896
 897    circle shaded "green" outline "black" ;
 898
 899  Filled arrows always use the outline color for filling.
 900
 901  Color support for TeX output is not implemented yet.
 902
 903Pic2graph
 904---------
 905
 906o A new script contributed by Eric S. Raymond <esr@thyrsus.com>.  It
 907  converts a PIC diagram into a cropped image.  Since it uses gs and the PNM
 908  library, virtually all graphics formats are available for output.
 909
 910Eqn2graph
 911---------
 912
 913o A new script contributed by Eric S. Raymond <esr@thyrsus.com>.  It
 914  converts an EQN diagram into a cropped image.  Since it uses gs and the PNM
 915  library, virtually all graphics formats are available for output.
 916
 917Groffer
 918-------
 919
 920o A new script contributed by Bernd Warken <bwarken@mayn.de>.  It displays
 921  groff files and man pages on X and tty, taking care of most parameters
 922  automatically.
 923
 924Grog
 925----
 926
 927o Documents using the mom macro package are recognized.
 928
 929Grops
 930-----
 931
 932o Color support has been added.
 933
 934o A new option `-p' is available to select the output paper size.  It has
 935  the same syntax as the new `papersize' keyword in the DESC file.
 936
 937Grodvi
 938------
 939
 940o By default, font sizes are now available in the range 5-10000pt, similar
 941  to PS fonts. If you want the old behaviour (i.e., font sizes at discrete
 942  values only), insert the following at the start of your document:
 943
 944    .if '\*[.T]'dvi' \
 945    .  sizes 500 600 700 800 900 1000 1095 1200 1400 1440 1600 \
 946             1728 1800 2000 2074 2200 2400 2488 2800 3600
 947
 948o A new font file HBI (using cmssbxo10; this is slanted sans serif bold
 949  extended) has been added.
 950
 951o Two font families are now available: `T' and `H'.
 952
 953o EC and TC fonts have been integrated.  Use `-mec' (calling the file
 954  ec.tmac) to switch to them.  Those fonts give a much better coverage of
 955  the symbols defined by groff than the CM fonts.
 956
 957  Note that ec.tmac must be called before any language-specific files; it
 958  doesn't take care of hcode values.
 959
 960o Color support has been added.  For drawing commands, colors are translated
 961  to gray values currently.
 962
 963Grotty
 964------
 965
 966o Color support has been added, using the SGR (ISO 6429, sometimes called
 967  ANSI color) escape sequences.
 968
 969o SGR escape sequences are now used by default for underlining and bold
 970  printing also, no longer using the backspace character trick.  To revert
 971  to the old behaviour, use the `-c' switch.
 972
 973  Note that you have to use the `-R' option of `less' to make SGR escapes
 974  display correctly.  On the other hand, terminal programs and consoles like
 975  `xterm' which support SGR sequences natively can directly display the
 976  output of grotty.  Consequently, the options `-b', `-B', `-u', and `-U'
 977  work only in combination with `-c' and are ignored silently otherwise.
 978
 979  For the `man' program, it may be necessary to add the `-R' option of
 980  `less' to the $PAGER environment variable; alternatively, you can use
 981  `man's `-P' option (or adapt its configuration file accordingly).  See
 982  man(1) for more details.
 983
 984o If the environment variable GROFF_NO_SGR is set, SGR output is disabled,
 985  reverting to the old behaviour.
 986
 987o A new special \X'tty: sgr n' has been added; if n is non-zero or missing,
 988  enable SGR output (the default).
 989
 990o If the new option `-i' is used (only in SGR mode), grotty sends escape
 991  sequences to set the italic font attribute instead of the underline
 992  attribute for italic fonts.  Note that many terminals don't have support
 993  for this (including xterm).
 994
 995Grohtml
 996-------
 997
 998o Color support for glyphs has been added.
 999
1000o New option `-h' to select the style of headings in HTML output.
1001
1002o New option `-b' to set the background colour to white.
1003
1004o New options `-a' and `-g' to control the number of bits for anti-aliasing
1005  used for text and graphics, respectively.  Default value is 4; 0 means
1006  no anti-aliasing.
1007
1008o groff character/glyph entities now map onto HTML 4 character entities.
1009
1010Grolbp
1011------
1012
1013o Valid paper sizes are now specified as with the new `papersize' keyword
1014  in the DESC file.  Specifically, the old custom paper type format
1015  `custAAAxBBB' is no longer supported.
1016
1017Miscellaneous
1018-------------
1019
1020o A new manual page `ditroff.7' is available.
1021
1022o The groff texinfo manual will now be installed, together with a bunch
1023  of examples.
1024
1025o A new keyword `papersize' has been added to the DESC file format.  Its
1026  argument is either
1027
1028  . a predefined paper format (e.g. `A4' or `letter')
1029
1030  . a file name pointing to a file which must contain a paper size
1031    specification in its first line (e.g. `/etc/papersize')
1032
1033  . a custom paper size definition like `35c,4i'
1034
1035  See groff_font(5) for more details.  This keyword only affects the
1036  physical dimensions of the output medium; grops, grolj4, and grolbp use it
1037  currently.  troff completely ignores it.
1038
1039VERSION 1.17.2
1040==============
1041
1042This is major bug-fixing release which should replace 1.17.1.
1043
1044Troff
1045-----
1046
1047o The `IMAGE' macro in www.tmac has changed: Now the optional 2nd parameter
1048  gives the horizontal image location (left, centered, or right), and the
1049  optional 3rd and 4th parameter the image dimensions.
1050
1051VERSION 1.17.1
1052==============
1053
1054This is mainly a bug-fixing release.
1055
1056Troff
1057-----
1058
1059o Two new requests `de1' and `am1' which are similar to `de' and `am' but
1060  with compatibility mode disabled during expansion of macros defined by
1061  them.
1062
1063o Added request `brp'.  This is the same as `\p'.
1064
1065o Similar to other versions of troff, the `ns' request now works in all
1066  diversions, not only in the top-level one.
1067
1068o New read-only number register `.ns'.  Returns 1 if in no-space mode,
1069  0 otherwise.
1070
1071Nroff
1072-----
1073
1074o Options -p (pic) and -t (tbl) added.
1075
1076o The environment variable GROFF_BIN_PATH is now checked before PATH for
1077  finding groff.
1078
1079Grohtml
1080-------
1081
1082o New option `-D dir' to specify a directory in which all images are placed.
1083
1084o New option `-I stem' to specify an image name stame.  If not given,
1085  `grohtml-XXX' is used (`XXX' is the process ID).
1086
1087VERSION 1.17
1088============
1089
1090Groff
1091-----
1092
1093o `-mFOO' now searches first for `FOO.tmac' and then for `tmac.FOO'.  The
1094  old behaviour has been changed to overcome problems with platforms which
1095  have an 8+3 file name limit, and platforms which have other versions of
1096  troff installed also.  Additionally, all macro files have been renamed
1097  using the latter scheme to avoid 8+3 name clashes.
1098
1099o The new environment variable GROFF_BIN_PATH is checked for programs groff
1100  is calling (preprocessors, troff, and output devices) before PATH.  If not
1101  set, it defaults to the directory where the groff binary is located.
1102  Previously, it was PATH only.  The nroff script only uses GROFF_BIN_PATH
1103  to find the groff binary but passes both the GROFF_BIN_PATH and PATH
1104  environment variables to groff.
1105
1106Troff
1107-----
1108
1109o The mdoc package has been completely rewritten, using the full power of
1110  GNU troff to remove limitations of Unix troff (which is no longer
1111  supported).  Most important changes are:
1112
1113  . No argument limit
1114  . Almost all macros are parsed and callable (if it makes sense)
1115  . `.Lb': prints library names
1116  . `.Nm <punctuation>' now works as expected; `.Nm "" <punctuation>' has
1117    been withdrawn
1118  . Updated `.St' command
1119  . `.Fx': prints FreeBSD
1120  . `.Ox': prints OpenBSD
1121  . `.Bsx': prints BSD/OS
1122  . `.Brq', `.Bro', `.Brc': brace enclosure macros
1123  . `.Bd -centered': center lines
1124  . `.Bl -xwidth <string>': interpret <string> and use the resulting width
1125  . Support for double-sided printing (-rD1 command line switch)
1126  . Support for 11pt and 12pt document sizes (-rS11, -rS12 command line
1127    switches)
1128
1129  `groff_mdoc.7' replaces `groff_mdoc.samples.7'; it now completely
1130  documents the mdoc package.
1131
1132  Great care has been taken to assure backwards compatibility.  If you
1133  encounter any abnormal results, please report them to bug-groff@gnu.org.
1134
1135o A new command line option for the `man' macros (similar to the `mdoc'
1136  package) has been implemented: `-rcR=1' (now the default in nroff mode)
1137  produces one single, very long page instead of multiple pages.  `-rcR=0'
1138  deactivates it.
1139
1140o The `return' request has been added to return immediately from a macro.
1141
1142o A new request `nop' (no operation) has been added which is similar to
1143  `if 1'.  For example,
1144
1145    .if t \{\
1146    Hallo!
1147    .\}
1148
1149  can now be written as
1150
1151    .if t \{\
1152    .  nop Hallo!
1153    .\}
1154
1155o `box' and `boxa' are two new requests which behave similarly to `di' and
1156  `da' but don't include a partially filled line (which is restored after
1157  ending the diversion).
1158
1159o The `asciify' request has been extended to `unformat' space characters
1160  and some other escape sequences also.
1161
1162  `\ ' is no longer unformatted as a space but remains an unpaddable,
1163  unbreakable space character.
1164
1165o The new `unformat' request is similar to `asciify' but only handles space
1166  characters and tabs specially if the diversion is reread, retaining font
1167  information.  This makes it possible to reformat diversions; for example
1168  the following
1169
1170    .ll 3i
1171    .
1172    a01 a02 a03 a04 a05 a06 a07 a08 a09 a10.
1173    .
1174    .box box1
1175    .ev 1
1176    .nf
1177    \f[B]b01 b02 b03 b04 b05 b06 b07 b08 b09 b10.\f[P]
1178    .br
1179    .ev
1180    .box
1181    .
1182    c01 c02 c03 c04 c05 c06 c07 c08 c09 c10.
1183    .
1184    .unformat box1
1185    .box1
1186
1187  gives
1188
1189    a01  a02  a03  a04 a05 a06 a07
1190    a08 a09 a10.  c01 c02 c03  c04
1191    c05  c06 c07 c08 c09 c10.  b01
1192    b02 b03 b04 b05  b06  b07  b08
1193    b09 b10.
1194
1195  Without the `unformat' request, space characters are converted to word
1196  space nodes which are no longer stretchable, and the result would be
1197
1198    a01  a02  a03  a04 a05 a06 a07
1199    a08 a09 a10.  c01 c02 c03  c04
1200    c05  c06 c07 c08 c09 c10.  b01
1201    b02 b03 b04 b05 b06 b07 b08
1202    b09 b10.
1203
1204o The new request `linetabs' controls the `line-tabs' mode.  In line-tabs
1205  mode, tab distances are computed relative to the (current) output line.
1206  Otherwise they are taken relative to the input line.  For example, the
1207  following
1208
1209    .ds x a\t\c
1210    .ds y b\t\c
1211    .ds z c
1212    .ta 1i 3i
1213    \*x
1214    \*y
1215    \*z
1216
1217  yields
1218
1219    a         b         c
1220
1221  In line-tabs mode, the same code gives
1222
1223    a         b                   c
1224
1225  The new read-only number register `.linetabs' returns 1 if in line-tabs
1226  mode, and 0 otherwise.
1227
1228o Two new requests `tm1' and `tmc' have been added to improve writing
1229  messages to the terminal.  `tm1' is similar to `tm' but allows leading
1230  whitespace.  `tmc' is similar to `tm1' but doesn't emit a final newline.
1231
1232o For compatibility with sqtroff, the request `output' has been added.
1233  The behaviour is similar to `\!' at the top-level, that is, it directly
1234  inserts its argument into the intermediate output format.  The syntax
1235  is similar to .tm1, allowing leading whitespace.
1236
1237o The new `spreadwarn' request will make troff warn if spaces in an output
1238  line are widened by a given limit or more.
1239
1240o Use `warnscale' to change the scaling indicator troff will use for
1241  warning messages.
1242
1243o A new request `dei' (define indirect) has been added.  The first and
1244  second parameter of `dei' are taken from string registers rather than
1245  directly; this very special request is needed to make `trace.tmac'
1246  independent from the escape character (which might even be disabled).
1247
1248o It is now possible to save and restore the escape character with two new
1249  requests `ecs' and `ecr'.
1250
1251o The new escape sequence \B'...' is an analogon to `\A': If the string
1252  within the delimiters is a valid numeric expression, return character `1',
1253  and `0' otherwise.
1254
1255o The new escape sequence `\:' inserts a zero-width break point.  This is
1256  similar to `\%' but without a soft hyphen character.
1257
1258o The `tr' request can now map characters onto `\~'.
1259
1260o Calling the `fam' request without an argument switches back to the
1261  previous font family.
1262
1263o The new read-only register `.int' is set to a positive value if the last
1264  output line is interrupted (i.e., if the input line contains `\c').
1265
1266o The `writem' request is not new, but hasn't been documented before.  This
1267  is similar to `write' but instead of a string the contents of a given
1268  macro or string is written to a stream.
1269
1270o The read/write number register `hp' to get/set the current horizontal
1271  position relative to the input line isn't new but hasn't been documented
1272  properly before.
1273
1274o `\X' and `\Y' are now transparent for end-of-sentence recognition.
1275
1276o The `cu' request in nroff mode now works as documented (i.e., it
1277  underlines spaces also).
1278
1279Grog
1280----
1281
1282o The grog script now works in non-compatibility mode also (which is the
1283  default).  As usual, use the `-C' option to activate compatibility mode.
1284
1285Grops
1286-----
1287
1288o A new option `-P' resp. a new environment variable `GROPS_PROLOGUE' has
1289  been added to select a different prologue file.
1290
1291o The effect of the former `-mpsnew' option to access more Type 1 characters
1292  is now the default and no longer available.  To get the old behaviour
1293  (i.e., emulation of some glyphs by composition) use `-mpsold'.
1294
1295Miscellaneous
1296-------------
1297
1298o For security reasons the following changes have been done:
1299
1300  . The tmac.safer file has been replaced with a built-in solution; .open,
1301    .opena, .pso, .sy, and .pi are completely disabled in safer mode (which
1302    is the default); to enable these requests the `-U' command line flag
1303    must be used.
1304
1305  . Files specified with the .mso request or given with the `-m' command
1306    line option, and hyphenation patterns loaded with `.hpf' are no longer
1307    searched in the current directory by default (besides the usual tmac
1308    path).  Instead, the home directory is used.  To add the current
1309    directory, either use the `-U' or `-M' command line option or set the
1310    GROFF_TMAC_PATH environment variable to an appropriate value.
1311
1312  . troffrc, troffrc-end, and eqnrc are neither searched in the current nor
1313    in the home directory (even if -U is given).  Use -M or GROFF_TMAC_PATH
1314    to change that.
1315
1316  . Similarly, the current directory is no longer part of the font path.
1317    Use the `-F' command line option or the GROFF_FONT_PATH environment
1318    variable if you really need the current directory.
1319
1320o groff now installs its data files into /usr/local/share/groff/<version> by
1321  default, following the GNU standard.  Additionally, a local tmac directory
1322  (by default /usr/local/share/groff/site-tmac) is scanned before the
1323  standard tmac directory.  Wrapper files for system-specific macro packages
1324  (if necessary) are put into /usr/local/lib/groff/site-tmac; this directory
1325  is searched before the local tmac directory.
1326
1327o All programs now have option `-v' to show the version number; they exit
1328  immediately afterwards, following the GNU standards.  Additionally,
1329  `--version' and `--help' have been added, doing the obvious actions.
1330
1331VERSION 1.16.1
1332==============
1333
1334Bug fixes only; no user-visible changes.
1335
1336VERSION 1.16
1337============
1338
1339Groff
1340-----
1341
1342The anachronism of calling the man macro package with `-man' has been fixed;
1343now you can say `-m man' also. The same is true for `ms', `me', `markup',
1344`mandoc', and `mdoc'.
1345
1346A new switch `-g' for calling `grn' is available.
1347
1348A new switch `-G' for calling `grap' is available.
1349
1350EBCDIC support for tty devices has been added.  On such hosts, IBM code page
13511047 is available with -Tcp1047 instead of -Tascii and -Tlatin1 (and, for
1352the moment, -Tutf8).  Note that non-tty devices are not yet supported (but
1353installed).
1354
1355Troff
1356-----
1357
1358A new command line option to the `man' macros is available: `-rSxx' (with
1359`xx' either 10, 11, or 12) to set the base document font size to `xx'
1360points.  Additionally, `.SH' now produces larger headings than `.SS'.
1361
1362To solve a problem with the .PSPIC macro which needs the `-U' switch of
1363troff to access an external program (psbb), a new request .psbb is now
1364available to get the bounding box of a PostScript image file.  The values
1365(in PostScript units) are returned in the new read-only number registers
1366`llx', `lly', `urx', and `ury'.  Consequently, .PSPIC has been adapted to
1367use the new request, and the psbb program has been removed.
1368
1369A new predefined writable number register, `year', has been added.  It
1370contains the current year.
1371
1372A new read-only register, `.Y', has been added.  It contains the revision
1373number of the groff package.
1374
1375`\fP' now behaves as expected in situations like the following where the
1376font `foo' is undefined:
1377
1378  .B bold text
1379  normal text \f[foo]bar\fP normal text
1380
1381Previously, the text after \fP appeared as bold.
1382
1383The `substring' request is not new, but hasn't been documented before.
1384
1385The predefined `.T' string register (which holds the current output device)
1386is not new, but hasn't been documented before.
1387
1388A new request `length' computes the length of a string and returns it in
1389a number register.
1390
1391The macro files `tmac.a4' (for specifying A4 paper format) and `tmac.trace'
1392(a debugging aid) are now installed also.
1393
1394A new resource file, `troffrc-end', is now available.  It is invoked after
1395all user-specified macros.  Currently used by the html device to include
1396tmac.html; thus no need for users to specify -mhtml anymore.
1397
1398The soft hyphen character now has a glyph name: `shc'.
1399
1400The latin-1 character 173 (PS name `periodcentered') has got the troff glyph
1401name `pc' and is no longer intermixed with the symbol character `md' (PS
1402name `mathdot').
1403
1404ASCII character 34 (PS name `quotedbl') has got the troff glyph name `dq'
1405(which is an alias to character `"').
1406
1407ASCII character 39 (PS name `quoteright') has got the troff glyph name `cq'
1408(which is an alias to character "'").
1409
1410Some additions to the font description files have been implemented for
1411better support of HTML output:
1412
1413  The new format of lines in the `charset' subsection of font description
1414  files is
1415
1416     name metrics type code [entity_name] [-- comment]
1417
1418  Currently, only the font description files in devhtml use the optional
1419  entity_name string to define glyph entities in HTML.  Everything after the
1420  entity_name field is ignored; in case this field isn't used, two hyphen
1421  characters are now necessary to start a comment.
1422
1423  Two new requests are available in DESC files (currently used only with
1424  grohtml):
1425
1426    use_charnames_in_special
1427      This command indicates that troff should encode named characters
1428      inside special commands.
1429
1430    pass_filenames
1431      requests that troff tells the driver the source file name being
1432      processed.  This is achieved by another tcommand: `F filename'.
1433
1434Grotty
1435------
1436
1437Bruno Haible <haible@clisp.cons.org> contributed support for UTF8 output.
1438
1439Grohtml
1440-------
1441
1442Added .LINE macro to tmac.arkup.
1443
1444The obsolete `.LINK' macro has been removed.
1445
1446.URL, .FTP, and .MAILTO macros now accept an optional third argument which
1447will be immediately appended to the second argument (to be used with
1448punctuation, for example).
1449
1450Grodvi
1451------
1452
1453The font size 11pt has been changed to 10.95pt (as used in LaTeX 2e).
1454
1455A new font file CWI (using cmitt10; this is typewriter italic) has been
1456added.
1457
1458Grolbp
1459------
1460
1461A new driver for Canon CAPSL printers (LBP-4 and LBP-8 series laser
1462printers).  This code has been contributed by Francisco Andres Verdu
1463<pandres@dragonet.es>.
1464
1465Grn
1466---
1467
1468A new preprocessor to process gremlin pictures.  It is based on the
1469original Berkeley implementation of grn, written by David Slattengren
1470and Barry Roitblat, and has been adapted to groff by Daniel Senderowicz
1471<daniel@synchrods.com> and Werner Lemberg <wl@gnu.org>.
1472
1473Pic
1474---
1475
1476Added the `srand' command to set the seed for a new sequence of
1477pseudo-random numbers to be returned by `rand'.
1478
1479Gxditview
1480---------
1481
1482Simplified installation: The Imakefile will now be configured (by groff's
1483configure script).
1484
1485Documentation
1486-------------
1487
1488Three new man pages are available: groff_tmac.5 (documenting how troff macros
1489are accessed and where they are found), groff.7 (a short reference of the GNU
1490roff language), and roff.7 (a general survey on GNU troff).
1491
1492Miscellaneous
1493-------------
1494
1495A partial port to win32 (for use with Microsoft Visual C++ 6.0) is now part
1496of the distribution.  It has been contributed by Blake McBride
1497<

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