SST.DSK        - Apple // disk image with SST and other utilities
SST            - Apple // executable of SST program
COPYII         - Apple // executable of Copy II+ 5.0
DDD20          - Apple // executable of Dalton's Disk Disintegrator v2.0
SST.DOC        - Instructions on making images of protected disks
BLANK.NIB        - Blank nibble image, used as "template" for nibble images