See all articles from TS Bulletin 1-1990
Two brief programming tips for ZX-81/TS1000 BASIC users: using a compact mathematical expression in place of PAUSE 200 to save memory bytes; and redimensioning arrays to their minimum size (e.g., DIM A$(0,0)) before saving a program to tape to reduce file size and save/load time, then restoring proper dimensions at line 0 so that GOTO 1 restarts without clearing data while RUN re-initializes cleanly.