Changes to hp2xx:
=================
V 3.3.0     , 99/09/30:

Corrected scaling of PS with RO and -r. Corrected positioning and scaling
of clipping box for LB with IW. Removed BF from the list of unsupported 
commands, as none of my HP-GL references mentions such a command.

V 3.3 ALPHA2, 99/09/12:

Corrected interpretation of PW (parameter list was backwards and there
was no provision for the 'default' cases),  added support for NP and
>8 pens, added PS (plot size) command to accurately reproduce page
position, added EW (edge wedge) command support. Removed improper scaling
of tick marks in ax_ticks(). Corrected rect(), which was advancing the
pen position after an EA.

=====================================================================

V 3.3 ALPHA,  99/09/01:

Incorporated PNG support (patches by Michael Schmitz(?) as packaged
by Lars Koeller for FreeBSD) and partial support for the PE command
(by Eugene Doudine). Added more character sets, so that 0-7 are now
supported (although some glyphs may be ugly or even wrong, they were
drawn after the small illustrations in an old plotter manual). Added
PenColor and PenWidth commands from HPGL/2 (not yet supported in the
old Sun and OS/2 output modules - help needed for these platforms).
PCL initialization sequence changed to use maximum available area in
"-t" mode and generate paper selection commands for formats larger than
A3 (untested).

=====================================================================


V 3.30.0, 99/01/31: (unreleased) 

First version packaged by new maintainer (this is what you get when you
ask where to send patches for an orphaned project).
Output functions for xfig (by Ian McPhedran) and gnuplot (by Emmanuel Bigler).
Support for the HP-GL commands IW (clipping) and CS (character set selection),
implementation of character sets 5 (Special Symbols) and 7 (HP Roman8 
Extensions), and support for 8bit addressing of charset 7 from charset 0.
PCL initialization sequence now includes appropriate paper size selection 
when in "-t" mode (European A4 and A3 formats only), as some (most?) printers 
do not select the larger size automatically.



======================================================================

NOTES:
     o  Intermediate versions have not been made publicly available.
     o  Letters at end of version number indicate small changes like
        source restructuring or minor bug fixes.


V 3.20a, 94/02/15:

This release contains major modifications. Besides a lot of cleamup it
deals with the introduction of high-level functions which represent
the different conversion phases of hp2xx. These may be called by *any*
user front-end, not just the traditional command line interface.

My intention is to facilitate the introduction of various graphical
user front-ends. If you want to add one, study function "action_traditional"
and read the comments in "hp2xx.h"!


	-- hp2xx.h:     Re-structured! Options & parameters now separated into
	                three groups: General / for input / for output conversion
	-- hp2xx.c:     Now with high-level routines suitable for future
	                GUI front-ends.
	                CLI functions incl. main() moved to "std_main.c"
	-- std_main.c:  New file! Keeps functions for traditional command line interface.
	                PCL mode now also accepts 600 DPI.
	-- hpgl.c:      Bug fixed: Gap in min/max determination caused later crash
	-- to_pbm.c:    Color supported + compact binary format (by Ian McPhedran)
	-- most files:    o  Adapted to new parameter structs
	                  o  Re-organized
	                  o  Use of "const"
	                  o  Better error recovery
	                  o  Direct output to stderr now eliminated (see std_main.c)
	Plus all changes later than 3.14a


V 3.15a, 94/01/02:

    Suggestions by Lawrence Lowe:
	-- to_pcl.c.c:  Effects of -o -O with and without -i more consistent
	-- hpgl.c:      New option: -C (center mode); affects -o -O
	-- chardraw.c:  Symbol plotting now with more general symbol centering
	-- hp2xx.c:     Warning "DPI setting is no ..." suppressed in DeskJet modes
	-- hpgl.c:      Second parameter of ES now optional (default 0)


V 3.14b, 93/11/23:

	-- to_pcx.c:    Color mode working again - though CLUT still has no effects
	                (by R. Frahm, DESY, Hamburg)
	-- hp2xxinf.tex:More typos fixes


V 3.14a, 93/11/15:

	-- to_eps.c:    Code now closer to Adobe EPSF structuring conventions
	                (thanks to Nelson Beebe for his detailed report)
	-- generic.mak: install-exe --> install-bin
	-- hp2xxinf.tex:Typos fixes
	Plus all changes later than 3.13a



V 3.13c, 93/10/23 & 93/11/08:

	-- to_vga.c:    Fix in getchar()-handling; bug reported by
	                Uwe Girlich (girlich@aix520.informatik.uni-leipzig.de)
	-- hp2xxinf.tex:Typo causing makeinfo error removed

V 3.13b, 93/09/27:

	-- hp2xx.c:     Fix in autoset_outfile_name() prevents crash in pipe mode
	                Improved VAX/VMS "makefiles"

V 3.13a, 93/09/03:

	-- hp2xx.c:     Wait() --> NormalWait(); -m hpgl added; -Pn:m parser modified
	-- hp2xx.h:     A few new #define's (VAX-VMS needs them); rect() prototype
	-- hp2xx.c:     Wait() --> NormalWait(); -m hpgl added; -Pn:m parser modified
	-- hpgl.c:      Support for EA (rect() added)
	-- to_mf.c:     Mode 5 (Simple HP-GL) added
	-- to_pm.c:     Minor changes to match emx 0.8g header
	-- to_pcl.c:    Compression only in Deskjet modes
	-- to_uis.c:    Minor fixes
	Plus all changes later than 3.12a


V 3.12f, 93/07/20: (see ./fixes)

	-- hp2xx.c:     SilentWait() better adapted to UNIX pipes (A. Bagge)
	-- hp2xx.h:     A few prototypes added
	-- to_os2.c:    Updated (H. Szillat); working in combination with to_vga.c
	-- to_pcl.c:    TIFF compression (mode 2) added
	-- to_vga.c:    Minor adaptations
	-- generic.mak: Fix for OS/2 full-screen version


V 3.12e, 93/05/28: (see ./fixes)

	-- hp2xx.h:     "Binary vs. text mode" finally added for OS/2, too
	-- to_os2.c     (by H. Szillat) added to distribution
	-- generic.mak: Minor improvements around OS/2, emx versions


V 3.12d, 93/05/20: (see ./fixes)

	-- hpgl.c:   Bug fix for LB/PR problem (by W. Eric Norum),
	             LT1 pattern adjustment
	-- to_eps.c: BoundingBox corrected for max pen width
	-- to_pcl.c: Code for end-of-raster-graphics corrected
	-- hp2xx.c:  Option --version added (GNU standard)


V 3.12, 93/04/17:

	-- New makefile for ATARI
	-- ATARI only: Support for mode "cs" (Chr. Strunk's TeX specials)
	-- New ATARI previewer
	-- charset.h: `0' without slash now, according to HP-GL charset 0
	-- chardraw.c:
		Prepared for multiple fonts;
		Bug fixed: 8-bit char codes won't crash hp2xx
		plot_user_char() added (code by A. Treindl)
	-- hpgl.c:
		Arcs/circles now properly closed (occasional tiny gaps removed)
		Bug fixed: SC followed by draw (without move) misplaced a point
		Serious bug fixed in the line type (LT) pattern generator
		Exception fixed in LT pattern generator
		hypot() problem fixed (DOS)
		UC supported
	-- picbuf.c:
		Always use 4 bits per pel in color mode (and 1 in b/w mode)
		New encoding scheme for color codes:
			nybbles instead of bit planes
			--> more mem, but faster access in color mode
		Obsolete type "DotBlock" finally replaced by "Byte"
	-- to_pcl.c:
		CMYK color support (for HP Deskjet 550C) added
	-- to_mf.c:
		Bug fix in "cad" mode (\emline statement lines now end with '%')
	-- to_eps.c:
		VM report lines are suppressed in 'quiet' mode
		BoundingBox: improved rounding (using floor and ceil)

	-- Much better generic makefile for many UNIX systems;
		   improved special makefiles
	-- Files re-organized (./extras removed):
		"amigalib.zoo" now distributed as separate file
			"hp2xx.amigalib.zoo"
		HGC support now distributed in separate file
			"hp2xx.hgc.showit.zoo"
		Other sources moved from ./extras to ./sources

V 3.11, 93/01/17:

	-- New makefile for Amiga
	-- Root directory renamed to hp2xx311 to make life easier
	   for DOS-based people
	-- File ownerships now rw-rw-rw
	-- code_to_ucoord() in chardraw.c:
		Reported bug (on RS6000 ONLY!) fixed

V 3.10, 93/01/09
	First release of sources as hp2xx.3.1.0.tar.Z under GNU conditions!!
	CMY color for Deskjet (PLC), option -S now with parameter;
	minor corrections

V 3.03a, 92/12/14
	Long options & "true size" mode (-t) added

V 3.02c, 92/12/10
	Range of pages (-P a:b) permitted now
	New mode: "cad" for TeXcad code!

V 3.02a, 92/10/20
	HPGL command LT (line type) now fully supported; bug in eps mode removed.

V 3.01d, 92/06/08
	HPGL commands SM, TL, XT, YT supported

V 3.00f, 92/05/25
	Up to seven colors (some modes)! Multiple-input handling; log files;
	auto-generation of output file names; output to stdout via "-f-"

V 2.20d, 92/04/14
	Symmetrical use of -h (height) and -w (width) options, new defaults:
	200 [mm] for both -h & -w. Picture will always fit into a window
	given by -h and -w

V 2.20c, 92/03/03
	Arcs, circles, fonts (Charset 0), pages, and many more commands supported
	ATARI-ST binary file added (only old version of hp2xx - sorry)
	DOS/386 binary file added (compiled with DJ Delorie's GNU-C version)
		WARNING: hp2xx386.exe's previewer tries to activate 800x600 SVGA mode!
	New modes: -m em (emTeX-specials), -m epic (epic macro \drawline)
	Modes pic & pac only supported in (outdated) ATARI version
	HPGL parser much easier portable and more tolerant to HPGL syntax variations
	Bugs in character scaling fixed; LO now fully supported

V 2.18e, 92/02/06
	X11,Sunview,ATARI: preview; IMG format supported;
	HPGL parser improved

V 2.17, 92/01/12
	Some debugging; more coherent sources, but no functional changes

V 2.16a, 91/11/21
	ATARI mode reduced again to simple "pic" format,
	support of "LT;", "LT0;" (for point plotting),
	support of different pens ("SP;", "SP0;"..."SP8;"),
	internal changes (faster now), more flexible MF syntax

V 2.14b, 91/10/10
	ATARI mode: New file name convention, adapted to STAD
	hp2xx.dvi:  Now part of distribution package

V 2.14a, 91/09/08
	ATARI ST support added.

V 2.13a, 91/06/30
	PostScript support added.
	Warning: Due to lack of local resources, PostScript format could
		 not be thoroughly tested. Please consider the PostScript
		 part as in "beta" state and report all problems.

V 2.12,  91/06/20
	First external release!
	Rotate option added, debug code removed
