DrScheme Release Notes ---------------------- Current Release: 50 Release Date: August 26, 1997. Submit bugs using the web interface (http://www.cs.rice.edu/CS/PLT/Gnats/) (encouraged) or send mail to firstname.lastname@example.org (discouraged). The following is a summary of the major changes in this release from the previous one. DrScheme -------- * DrScheme’s fonts can now be configured through the Preferences dialog. * DrScheme’s Beginner and Intermediate languages are more strict. This provides better error messages for expressions like (1 2) or (cond (null? l)). * A quasiquote bug has been fixed for forms like `(1 . ,3). * The `turn’ turtle command now turns counter-clockwise in degrees (instead of clockwise in radians). The The `turn/radians’ command turns counter-clockwise in radians. * Printing has been fixed. * Output in the interactions window is much faster. Donkey ------ * The Stepper tool (Donkey) is temporarily unavailable in release 50 and will reappear in a future release. MrEd ---- * The look and speed of the non-Motif X Windows version has improved. * See plt/mred/HISTORY and plt/mred/system/history in the distribution for other changes. MzScheme -------- * Added compile-time inference of procedure names for better error reporting. * Added a mechanism for saving and restoring heap dumps under Unix. See plt/mzscheme/HISTORY in the distribution for other changes. Known Problems -------------- * See plt/openbugs in the distribution.