Copyright (C) 1990, 1992, 1993, 1994 Aladdin Enterprises.  All rights reserved.    This file is part of Aladdin Ghostscript.    Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND.  No author  or distributor accepts any responsibility for the consequences of using it,  or for whether it serves any particular purpose or works at all, unless he  or she says so in writing.  Refer to the Aladdin Ghostscript Free Public  License (the "License") for full details.    Every copy of Aladdin Ghostscript must include a copy of the License,  normally in a plain ASCII text file named PUBLIC.  The License grants you  the right to copy, modify and redistribute Aladdin Ghostscript, but only  under certain conditions described in the License.  Among other things, the  License requires that the copyright notice and this notice be preserved on  all copies. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This file, current.doc, describes problems and new features in the currentrelease of Ghostscript.  This file describes version 3.23 of Ghostscript. For an overview of Ghostscript and a list of the documentation files, seeREADME. New features (since release 3.0)============ Note: this is not a complete list of new features.  See the NEWS file forfull details. Implements all remaining significant Level 2 features: halftoneTransferFunction, setpagedevice (subset), XStep/YStep for Patterns,Interpolate for images, AccurateScreens (limited implementation). Provides PageSize, Margins, .HWMargins, and ImagingBBox device parameters,which allow complete control over the size and positioning of images onprinters. Implements a new psmono device, replacing the ps2image utility. Supports many new 800x600x16 SuperVGA displays.  See use.doc for details. Adds a -dFAKEFONTS switch that makes fake entries in FontDirectory forunloaded fonts, for the benefit of programs that think they can find allthe available fonts by scanning FontDirectory. Adds the Canon BJ-200 and H-P LaserJet 4 drivers to most makefiles. Adds a -dWindowID= switch (for X Windows) that allows specifying the windowto which output should be directed. Known problems============== Usage----- On a MS-DOS system, interrupting the interpreter by typing ^C doesn'trestore the display mode. Limitations----------- serialnumber returns the same value in all copies. The realtime operator is not implemented. User names (a Display PostScript facility) are not implemented. Some floating point exceptions terminate the interpreter, rather thanproducing a limitcheck error. The DCTEncode filter disregards the Blend parameter, and uses differentQuantTables and HuffTables from Adobe's. The DCT filters do not support nonintegral sample ratios, and do not allowSum(HS*VS)>10, regardless of the value of the Relax parameter. The size of the execution stack cannot be changed dynamically.  (However,the sizes of the operand and dictionary stacks can be changed.) Separation color spaces are implemented, but devices that actually producecolor separations are not supported.  The special color separations All andNone, and the primary separations (Red, Green, etc.), are not supported. execform and ucache are implemented, but they do not actually do anycaching; setucacheparams and ucachestatus are dummies.  (This only impactsperformance, not functionality.) setpagedevice and currentpagedevice only look at a fixed, small set ofkeys.  See the NEWS file for details. The image operator only honors the Interpolate flag in the imagedictionary if the combined transformation (ImageMatrix + CTM) doesn'tinvolve rotation, skewing, or X-reflection. Graphics bugs------------- The implementation only looks at the PaintType of the font when doingshow, not when doing charpath.  Because of this, stroked fonts don't workcorrectly with charpath. arcto gives an error for negative radii. Opening more than one window device at the same time doesn't work.This is the case for both X Windows and Microsoft Windows. setpagedevice affects the driver, not just the current graphics state.Consequently, restore / grestore / grestoreall / setgstate may not undosetpagedevice properly. cshow doesn't work with composite fonts. Non-graphics bugs----------------- The %statementedit pseudo-file is equivalent to %lineedit.  As aconsequence, the interactive interpreter requires that every statement fiton a line, i.e., you can't have an unpaired (, {, or <. The following operators that expect arrays won't accept packed arrays:	definefont (Subrs (type 1 fonts))	setdash (dash pattern) Syntax errors occurring within a binary token do not produce the errormessage specified by the Adobe documentation. restore doesn't restore the user parameters. 1 vmreclaim is equivalent to 2 vmreclaim -- there is no separate GC forlocal VM.