PLT Release Notes ----------------- Current Release: 53 Release Date: July 25, 1998. DrScheme v53 is primarily a bug-fix release. Many of the fixes are a result of the TeachScheme! 1998 Workshop held at Rice University. This note summarizes the major differences between this release and DrScheme v52. The Future ---------- PLT intends to conduct a major release by the end of this year or early next year. The changes will directly affect users of MrEd, the graphical toolbox. Please expect deletions of features, additions, and a few modifications. DrScheme will migrate to a graphical multi-module environment. This change should not affect beginners or teachers. Changes ------- * DrScheme, MrEd, and MzScheme have significantly improved performance on PowerPC Macintoshes. See the HISTORY files in notes/drscheme descriptions of other changes and bug fixes for DrScheme. MzScheme and MrEd users should look at the HISTORY files in notes/mzscheme and notes/mred for detailed descriptions of changes and bug fixes for those applications. Web pages --------- Rice PLT is pleased to mention its Web collection of resources for Schemers at http://www.schemers.org/.