Manual Addendum for Version 1.3

A full-screen map feature has been added to the game using the double-low-res mode.  It requires a 80-column, 128K system such as a IIe, IIc, or IIgs.  
TAB - Toggles between map and game.
R - Toggles robot dots on the map.
CURSOR KEYS - Scroll around the map

Also support for ECHO+ card for sound/music has been added.
