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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Recent changes in Ghostscript</title>
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<body>
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<!-- [1.1 begin headline] ================================================== -->

<h1>Changes in the most recent release of Ghostscript</h1>

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<!-- [1.2 begin table of contents] ========================================= -->

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<p>
This document is news about the most recent Ghostscript release.  For
earlier versions, see the history documents:

<blockquote>
<a href="History8.htm">History of Ghostscript versions 8.n</a><br>
<a href="History7.htm">History of Ghostscript versions 7.n</a><br>
<a href="History6.htm">History of Ghostscript versions 6.n</a><br>
<a href="History5.htm">History of Ghostscript versions 5.n</a><br>
<a href="History4.htm">History of Ghostscript versions 4.n</a><br>
<a href="History3.htm">History of Ghostscript versions 3.n</a><br>
<a href="History2.htm">History of Ghostscript versions 2.n</a><br>
<a href="History1.htm">History of Ghostscript versions 1.n</a>
</blockquote>

<p>For other information, see the <a href="Readme.htm">Ghostscript
overview</a>.

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<hr>

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<!-- [2.0 begin contents] ================================================== -->

<h3><a name="Version8.50"></a>Version 8.50 (2004-12-10)</h3>

<p>This is the first release in the new stable series of Ghostscript.
In addition to many bug fixes it contains numerous new features. Most
obvious will be improved font handling and rasterization, and better
support for PDF 1.4 and 1.5 documents.

<p> 
New features since the last stable release:

<ul>
<li><p>
Topological grid fitting,
an original method developed for Ghostscript by Dr. Igor V. Melichev, improves 
the rendering of True Type fonts at small resolutions.
See the documentation for <a href="Language.htm#GridFitTT">GridFitTT</a> for information on this
feature.

<li><p>
The PDF writer now implements PDF 1.4 encryption.
See the <a href="Ps2pdf.htm#Encryption">encryption parameter</a> documentation for more
information.

<li><p>
A new rendering method for shadings, developed for Ghostscript by 
Dr. Igor V. Melichev, improves the quality and performance of 
rasterization on continuous tone devices.
The new method allows hardware or software acceleration with help of
customizable routines for filling areas with a linearly varying color.
functions.

<li><p>
Better support for running Ghostscript in "Job Server" mode as a daemon
to continually accept and convert a series of independent files.

<li><p>
Also new is the Rinkj deivce, an
experimental new driver for some inkjet printers using ETS screening
and color profiles to achieve very high quality output for tuned output.
See the <a href="Devices.htm#Rinkj">Rinkj</a> section for more information.

<li><p>
We now support PDF 1.5 files, including the new compression
and encryption modes.

<li><p>
We have beta support for JPEG 2000 compressed images, using the JasPer
compression library. In this release this support is only enabled as in 
the default autoconf (POSIX) and MSVC builds.

</ul>

<p>
This release also has major internal improvements toward thread safety, 
although we have not yet reached this goal. Nevertheless Ghostscript  
should be more robust when used as a library, and these changes were
an important precursor to complete virtualization.


<p> The following <a href="http://bugs.ghostscript.com/">bug</a> numbers
were open at the time of the last release: <blockquote>
405501,
430175,
446344,
458780,
463688,
465936,
487953,
493348,
526099,
526491,
530011,
535366,
535932,
578865,
592160,
603934,
610478,
614298,
626295,
674418,
677324,
685335,
686747,
686750,
686816,
686819,
686824,
686841,
686842,
686843,
686853,
686865,
686867,
686919,
686980,
686996,
687011,
687012,
687013,
687039,
687059,
687063,
687084,
687086,
687095,
687105,
687108,
687110,
687122,
687125,
687146,
687168,
687174,
687193,
687196,
687203,
687219,
687221,
687229,
687231,
687243,
687251,
687257,
687259,
687271,
687280,
687295,
687297,
687298,
687303,
687314,
687316,
687324,
687327,
687341,
687342,
687345,
687346,
687360,
687373,
687375,
687394,
687397,
687399,
687401,
687410,
687414,
687434,
687435,
687445,
687460,
687468,
687473,
687474,
687475,
687480,
687484,
687485,
687492,
687497,
687498,
687514,
687518,
687520,
687523,
687525,
687529,
687531,
687535,
687536,
687537,
687539,
687541,
687545,
687551,
687558,
687559,
687560,
687561,
687583,
687593,
687595,
687600,
687608,
687611,
687621,
687622,
687628,
687630,
687633,
687642,
687643,
687644,
687650,
687654,
687657,
687661,
687663,
687666,
687669,
687674,
687676,
687677,
687678,
687679,
687680,
687682,
687684,
687686,
687694,
687695,
687696,
687697,
687702,
687707,
687712,
687715,
687717,
687721,
687727,
687728,
687729,
687731,
687735,
687738,
687754,
687756,
687769,
687772,
687775,
687778,
687780,
687782,
687783,
687786,
687791,
687793,
687795,
687796,
687800,
687802,
687803,
687805,
687806,
687808,
687809,
687813,
687814,
687815,
687816,
687820,
687822,
687823,
687825,
687826,
687827,
687828,
687830,
687831,
687832,
687834,
687835,
687836,
687837,
687838,
687840,
687842,
687843,
687844,
687845,
687846,
687847,
687848,
687849.
</blockquote>

<h3><a name="8.50_Incompatible_changes"></a>Incompatible changes</h3>

<p>
No known incompatible changes at this point


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<hr>

<p>
Copyright &copy; 2004 artofcode LLC.  All rights
reserved.

<p>
This software is provided AS-IS with no warranty, either express or
implied.

This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.

For more information about licensing, please refer to
http://www.ghostscript.com/licensing/. For information on
commercial licensing, go to http://www.artifex.com/licensing/ or
contact Artifex Software, Inc., 101 Lucas Valley Road #110,
San Rafael, CA  94903, U.S.A., +1(415)492-9861.

<p>
<small>Ghostscript version 8.50, 10 December 2004

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