------------------------Version 3.3.2   7/7/92------------------------  1: Added UTF support for Plan 9. Only signigficant source code changes were    in dpost.utf (font.h, font.c, dpost.c). Added common/rune.[hc] so code    can be compiled elsewere. Remove RUNELIB in commmon/rune.h if fullrune(),    chartorune(), and runetochar() are available on your system. Original    DWB 3.3 dpost source is in directory dpost. You should select dpost or    dpost.utf in postscript.mk. Both compile and install a program called    dpost so don't pick both!  2: dpost can read old or UTF troff output. Default is whatever is assigned    to READING (file common/gen.h). You get one or the other, unless troff    tells dpost what encoding to use (currently x E UTF).  3: Most other translators passed bytes through and so only needed slightly    modified proglogues and a new encoding scheme (psencoding/UTF.enc). It    works for Latin1, but still needs a bit more attention. Prologue changes    were easy and only involved adding lines like, 	/show {show} bind def	/stringwidth {stringwidth} bind def     Guarantees text procedures used in prologues aren't operators and can be    successfully redefined in UTF.enc. Unbinding means a small but probably    not noticeable speed penalty. You may not want to include those changes    on other system.  4: Operator redefinitions means dpost should work in it's own dictionary    (rather than userdict). Not implemented yet, but should be easy. Only    potential problem is with picture inclusion when dpost reads UTF.enc. ------------------------Version 3.3.2   5/15/92------------------------  1: postio now outputs all unrecognized status reports - primarly for spooler    accounting purposes.  2: The makefiles also enable the selection of alternate stream module names    for streams based DKHOST support in postio.  3: dpost now assumes the optional fifth token in a font mounting command    (e.g. x font 2 R /usr/me/font/R) is the full pathname of the font. troff    outputs the pathname when a .fp request contains a third argument that    begins with a / as in .fp 1 R /usr/me/font/R.  4: By request Latin1's - character has been changed from minus to the smaller    hyphen character. Added \(dq and \(bs (for " and \ characters) to devpost    and devLatin1 tables. Also added \(!! and \(?? to devpost tables.  5: Helvetica-Light and Helvetica-LightOblique tables are included as HL and    HK in devpost and devLatin1, even though fonts aren't generally available.    Also copy H to HM during an install of devpost and devLatin1 tables.  6: LH is a horizontally arranged color Lucent logo with text which replaces the AT&T logo.    LV is a vertically arranged monochrome AT&T logo with text.    FA is a horizontally arranged monochrome Lucent logo with text (low res.).	L1 is a monochrome AT&T logo, no text.	LA is a monochrome AT&T text.  7: Included L1 and LA outlines in devpost and devLatin1. Adjusted LA scaling    so size of "AT&T" matches what's in LV. Original PostScript came    from Matthijs Melchior.  8: Included the "symmetric clippath" version of roundpage.ps as Nroundpage.ps    in directory postscript/psfiles. Move it to roundpage.ps if you want it to    be the default.  9: Added a few lines of code to dpost for handling current implementation of    the portrait/landscape mode macros. 10: The man page for download now documents the -r option and notes that -p    is for Unix 4.0 lp. ------------------------Version 3.3.1   4/30/91------------------------  1: buildtables stuff has been cleaned up and is now a user level command.    Uses shell.lib files that are installed with font tables. The devpost    tables were built on a version 47.0 PS-810. The devLatin1 tables were    built on a version 51.7 PS-820.  2: The devLatin1 tables provide support for the ISO Latin1 alphabet on    PostScript printers.  3: All translators support different text font encoding schemes using the    -E option and *.enc files installed in POSTLIB. The ISO Latin 1 alphabet    is supported with file /usr/lib/postscript/Latin1.enc.  4: printfont prints a table of the available (encoded) characters in one    or more PostScript fonts. It also understands the -E option.  5: grabit and hardcopy are two new programs that may be of interest to the    more serious PostScript programmer. grabit resembles ==, but produces    output that's usally easier to read. hardcopy redirects output from    PostScript file output operators (or procedures) to paper. It's useful    if you don't have direct access to a printer.  6: Prologues and programs are stored together. Other common PostScript files    are now in the psfiles directory. ------------------------Verions 3.3	4/16/90------------------------  1: The package is now included in DWB. Version numbers are a bit misleading.    The one in postscript.mk refers to the DWB package.  2: dpost (and troff) now read ASCII font tables. makedev and the old binary    format are gone.  3: The devpost directory came directly from the DWB package. The font tables    originally distributed with this package are in directory devopost. They    are not installed. If possible we recommend you use the devpost tables.    The old tables can be installed by adding devopost to the TARGETS list in    file postscript.mk.  4: dpost recognizes two new fields in font tables. Entries for the full    PostScript font look like, 		fontname Times-Roman     The fontname field is helps manage host resident fonts, the DocumentFonts    comment, and is used to define font name abbreviations like the ones in    dpost.ps. A font table entry that looks like, 		named in prologue     disables the runtime abbreviation for the font - dpost assumes it's already    in the prologue.  5: Extra font tables included in DWB 3.0's devpost font collection are in    directory devpost.add. They included here, but should probably not be    used.  6: Bracket building has been fixed and tested on a wide range of PostScript    printers. It will likely still not work on many clones. Real problem    appears to be with Adobe's braceleftbt character.  7: Most of the special tuning code for device emulation has been removed.    Emulation still works, but there may be cases where it's not as good as    earlier versions.  8: Several problems with color and reverse video printing have been fixed.  9: buildtables directory has been cleanup up. The template files in directory    buildtables/devpost.data were used to build the devpost tables. 10: postplot and download are two new programs. postplot is for the System V    plot package only. Both were written for the Unix 4.0 lp package. 11: postgif is also relatively new - it came from Chi Choy. 12: The translators now rotate clockwise when printing in landscape mode. If    you want the old behavior set ROTATION to -1 in postscript.mk. 13: forms.ps has been cleaned up some. Better behavior when you print 2    landscape pages on one sheet. 14: Handling of Datakit code for System V has been changed some. Makefiles    now expect to find libdk.a and dk.h in standard places (e.g /usr/lib and    /usr/include). Set DKHOST to TRUE in postscript.mk to get Datakit support    on System V.     If you're stuck and need to have things behave as they did in the past    take a look at file postio/postio.mk. Define DKHOSTDIR and uncomment    three lines and the behavior should be close to what it was. 15: Picture inclusion and color macros are gone. They're included in the DWB    package, and not here. ------------------------Version 3.2	11/27/89------------------------  1: Implemented height and slant requests in dpost.  2: Modified the behavior of all translators so save objects are no longer left    on the stack. The original implementation was a mistake and occasionally    (e.g. picture inclusion with forms.ps) resulted in invalid restores.  3: Fixed the mistake in the external declaration of mesg in postio/slowsend.c.  4: The malloc() call in postdmd (routine dimensions()) is only made if patterns    is positive.  5: Changed definition of De in draw.ps so savematrix is loaded with the CTM    whenever De is executed. Original implementation didn't work with forms.ps    because the CTM is changed with each page image. (4/29/89)  6: Flush stdout when postio is invoked with the -t option - just convenient    not necessary. (4/30/89)  7: Included a man page for the picture inclusion macros - file man/mpictures.5.    (5/6/89)  8: Added BoundingBox code to dpost - still needs to go in other translators.    Most of the work is done in common/bbox.c. (5/7/89)  9: Fiddled with the bracket building stuff in dpost.ps so things finally look    decent. Was particularly bad on the typesetter. 10: dpost now generates a PageBoundingBox comment and ps_include.c accepts    the comment. Added -B option to enable/disable the BoundingBox calculations.    -Bon to enable and -Boff to disable. On by default now, but that may change.    Add similar code to the rest of the translators (6/20/89). 11: Fixed ps_include.c so it properly handles %%BeginGlobal and %%EndGlobal.    Added braces and compare page.start to page.end instead of 0. 12: Added xymove(hpos, vpos) for \X'PS ...' request - near the end of devcntrl().    Must output position info for following PostScript. 13: Added a call to endtext() immediately before the oput() call for \N'...'    requests. Without it spacing often messed up with -e2 but not -e0. ------------------------Version 3.1	11/15/88------------------------  1: postio can run as one or two processes (-R option) and can establish an    interactive connection with a postscript printer (-i option). Parsing of    status reports has been improved. The status query mechanism can be disabled    using the -q option. An exit status of 1 implies a system error (eg. can't    open the line) while 2 usually means there was an error in the PostScript    file. By default postio runs as a single process. The -B, -R, and -q options    can be used to speed things up some. A version of the program (previously    supplied in postio.tmp) that can help if you seem to be having flow control    problems can be obtained using the -S option. It's not generally recommended    and should only be used as a last resort!  2: Several widthshow encoding schemes have been added to dpost and can reduce    print time by 20% or more. The method used to encode lines of text can be    changed on the command line using the -e option. Level 0 produces output    essentially identical to previous versions of dpost. The default can be    changed by modifying the definition of ENCODING in ./Makefile. At present    only level 0 is thoroughly tested, although level 2 (ie. -e2) may be the    default and is undoubtedly worth a try.  3: dpost now supports color selection and reverse video. Access in troff is via    the stand-alone macro package ./macros/color. Examples are, 	.so /usr/lib/macros/color	.CL red "this prints in red"	.CL "white on black" "and this prints white text on a black background"     The postscript procedures that handle color and reverse video can be found    in ./postscript/color.ps. Additional colors can be added to the colordict    dictionary defined in ./postscript/color.ps.  4: The dpost drawing routines have been improved and have been moved from the    prologue (ie. ./postscript/dpost.ps) to ./postscript/draw.ps. That file is    only included if needed. Drawing routines now support the ability to group    a series of drawing commands together as a single path. May be useful for    future versions of pic that wish to fill regions with colors or gray levels.    Access is via the new "x X BeginPath" and "x X DrawPath" device control    commands. In addition there's some complicated PostScript code in file    ./postscript/baseline.ps, that can be used to set text along an arbitrary    curve. It's terribly confusing and I doubt anyone will have the patience to    bother to figure it out.  5: A simple picture packing troff preprocessor (picpack) has been included and    the code needed to recover pictures and text has been added to dpost. The    program is designed to supplement to the original picture inclusion mechanism,    and should ONLY be used when absolutely necessary. Using dpost to pull picture    files into a document is strongly recommended and will always be the more    efficient and portable approach. picpack simply provides a way to combine    pictures and text in a single file before dpost is executed. It may help in    a distributed printing environment where the user runs everything through    troff while a spooling daemon (eg. lp) handles the postprocessing. There    are serious disadvantages to this approach, with perhaps the most important    being that troff output files (when picpack is used) will likely result in    files that can no longer be reliably passed through other important post-    processors like proof.  6: Code to handle host resident PostScript fonts in dpost has been tested and    finally works. The -H option points dpost to a host resident font directory,    which by default is NULL. Host resident font files stored in that directory    must be assigned a name that corresponds to the one or two character troff    font name. Width tables must also be built (see buildtables/README), the new    binary font files must be installed in /usr/lib/font/devpost, and a mapping    definition from troff's name to the PostScript font name must be added to    ./postscript/dpost.ps.  7: The default pattern length in postdmd has been reduced to from 10 to 6 bytes.    Printers with fast processors (eg. PS-810s) often benefit from a further    reduction, while optimal performance on slower printers (eg PS-800s) may    require larger pattern sizes. The pattern length can be set using the -b    option. Increasing the pattern size usually increases the size of the output    file.  8: Line drawing in posttek and postbgi includes code that automatically ties    lines to device space coordinates when you select a non-zero width. Helps    eliminate the variation in line thickness that many observed. The default    line width in posttek and postbgi is still 0 (which gets 1 pixel). If you    want a different default change the definition of variable linewidth in files    ./postscript/posttek.ps and ./postscript/postbgi.ps.  9: Defocused lines in posttek have been fixed. 10: postbgi now supports color and can be used to translate most PRISM (color    BGI) jobs. Special device specific tuning needed for many PRISM jobs can be    enabled by using the -P"/prism true" option. Missing pieces (eg. subroutines)    needed for translating PRISM jobs, have also been implemented. 11: postreverse can reverse the pages in documents that conform to Adobe's 1.0    or 2.0 file structuring conventions, and it works with all the translators in    this package. The new version is backwards compatible, but files produced by    the new translators should not be passed through old versions of postreverse.    The likely result will be no output at all. If you choose to do a partial    installation put the new postreverse up first! 12: All translators attempt to conform to Adobe's Version 2.0 file structuring    conventions. dpost output falls short, but only in the interest of efficiency.    Passing dpost output through postreverse (perhaps with the -r option) produces    a minimally conforming PostScript file. 13: All the translators now support three options that pass arbitrary PostScript    through to the output file. The -P and -C options add a string and the    contents of a file respectively immediately after the prologue. It's assumed    whatever is added is legitimate PostScript - there is no checking. In each    case the added PostScript code becomes part of the job's global environment.     The -R option can be used to request special action (eg. manualfeed) on a    global or page basis.  The argument should be "request", "request:page", or    "request:page:file". If page is given as 0 or omitted the request applies    globally. If file is omitted the lookup is in /usr/lib/postscript/ps.requests.    The collection of recognized requests can be modified or extended by changing    /usr/lib/postscript/ps.requests. 14: PostScript code (from Johnathan Shopiro) that produces bolder versions of the    Courier fonts has been included in file postscript/fatcourier.ps. The file    can  be added to individual prologue files (eg. dpost.ps) or pulled in as    needed using the -C option. 15: postmd is a new program that can be used to display a large matrix as a gray    scale image. May help if you're looking for patterns in a large matrix. A very    optimistic estimate suggests you can display up to a 600x600 matrix (with five    different shades of gray) on 300dpi printer using 8.5x11 inch paper. 16: What's available in buildtables has been cleaned up and works well with the    new version of postio. It can be used to have PostScript printers build troff    width tables for both printer and host resident fonts. 17: The PostScript bind operator has been applied to all procedures that are    expected to be executed more than once. Redefined save and restore procedures    are no longer needed and saverestore.ps is not included in this package. 18: The bizarre PostScript code used to get to the upper left corner of a page    in old versions of dpost.ps and postprint.ps has been replaced by something    that's at least slightly more comprehensible. All prologues have also been    changed so picture inclusion (eg. including a pic picture that's been run    through troff and dpost) should work better than previous versions. Still    missing (from most translators) is the %%BoundingBox comment and even when    it's put out (by postdmd) only the dimensions are correct - sorry! 19: The careless mistake in the DKHOST section of postio that some noticed belongs    to me (not Allan Buckwalter) and has now been fixed. 20: By default all prologues still use the current clipping path to determine page    dimensions, but that behavior can be disabled by setting boolean useclippath    (in each prologue) to false. In that case the page dimensions will be taken    from array pagebbox, which by default is initialized to 8x11 inch paper. The    -P options (in each translator) can change useclippth and pagebbox. 21: New in the misc directory is sample lp support from Maryann Csaszar and a    simple program that converts host resident font files obtained from a Macintosh    to a format that works on Unix.