Copyright (C) 1990, 1992, 1993 Aladdin Enterprises.  All rights reserved.

This file is part of Ghostscript.

Ghostscript is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY.  No author or distributor accepts responsibility
to anyone for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing.  Refer
to the Ghostscript General Public License for full details.

Everyone is granted permission to copy, modify and redistribute
Ghostscript, but only under the conditions described in the Ghostscript
General Public License.  A copy of this license is supposed to have been
given to you along with Ghostscript so you can know your rights and
responsibilities.  It should be in a file named COPYING.  Among other
things, the copyright notice and this notice must be preserved on all
copies.

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This file, readme.doc, describes problems and new features in the
current release of Ghostscript.  This file describes version 2.6.1 of
Ghostscript.

For an overview of Ghostscript and a list of the documentation files, see
README.

New features
============

Note: this is not a complete list of new features.  See the most recent
section of NEWS for full details.

Handling of both color and platform fonts under X Windows is greatly
improved.  See the X Windows section of use.doc for details.

A new document, commprod.doc, clarifies the requirements for being
able to distribute Ghostscript in conjunction with commercial
products.

Known problems
==============

Interpreter
-----------

The interactive interpreter requires that every statement fit on a line,
i.e., you can't have an unpaired ( or {.

On a MS-DOS system, interrupting Ghostscript by typing ^C doesn't restore
the display mode.

Operators
---------

The Ghostscript language does not include the following operators of the
PostScript language:

	resetfile
	banddevice, renderbands (these are obsolete)

The following are not implemented completely:

	%statementedit (file name): interpreted as equivalent to
%lineedit.

The following operators that expect arrays won't accept packed arrays:
	definefont (Subrs (type 1 fonts))
	setdash (dash pattern)
	setcachedevice (bounding box)
	makeimagedevice (palette)

Limitations
-----------

Floating point exceptions terminate Ghostscript, rather than producing a
rangecheck error.

copypage does nothing in the MS-DOS implementation, and merely
synchronizes the X connection in the Unix implementation.  showpage is a
procedure that does a copypage and then beeps the bell and waits for the
user to hit a key. (copypage does do the right thing for printers.)

Graphics bugs
-------------

strokepath may produce incorrect output for dashed lines.

The implementation only looks at the PaintType of the font when doing
show, not when doing charpath.  Because of this, stroked fonts don't work
correctly with charpath.

arcto gives an error for negative radii.

Halftone patterns "flip over" at the 50% coverage point, producing
anomalous visual effects on some color devices.

Opening more than one window device at the same time doesn't work.
This is the case for both X Windows and Microsoft Windows.

glyphshow only works with Type 1 fonts.

Non-graphics bugs
-----------------

restore doesn't properly undo currentgstate.

Copying a dictionary may alter some items even if a later item causes
an invalidaccess error because of an attempted store of a local
object into global VM.