ref: 3663603627809a11908dc1dfadd158cfde8e0672
dir: /midend.c/
/* * midend.c: general middle fragment sitting between the * platform-specific front end and game-specific back end. * Maintains a move list, takes care of Undo and Redo commands, and * processes standard keystrokes for undo/redo/new/restart/quit. */