A program created with MOVE can have multiple overlays in memory at one time. The Static Overlay Manager permits only one overlay in memory at a time.
MOVE permits interoverlay calls through pointers to functions. Overlays created with the Static Overlay Manager cannot call each other in this way.
MOVE can cache discarded overlays in expanded and extended memory; this provides quick access if an overlay is called again. The Static Overlay Manager has to reopen the executable file each time an overlay is called.
The maximum number of overlays allowed by MOVE is 2047. The Static Overlay Manager allows only 255 overlays.