+Changes since 4.10: * New hacks, `hypertorus', `cubestorm', `glknots',
+ `blocktube', and `glmatrix'.
+ * Updates to `cloudlife', `engine', `xmatrix', and
+ `sonar'.
+ * Rewrote `glslideshow': it should work on somewhat
+ wimpier video cards now.
+ * Various portability tweaks.