Version 8.57 of GPL Ghostscript, a PostScript interpreter, has been announced. "This is a stable release in the 8.5x series. In addition to the usual bug fixes, there are specific performance and quality improvements in the areas of patterns, shading and image filtering. Also new in this release is an implementation of the Well Tempered Screening algorithm in an output device, using Graeme Gill's IMDI library for efficient color mapping."

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