Spinoffs
The Coca-Cola Corporation used a customized version of FOCAL called COKE.
FOCAL was later implemented on the PDP-7/9, PDP-11, PDP-12, PDP-5 and LINC-8.
The FOCAL manual showed how to add commands to the FOCAL parser, so many sites added specialized commands for operating custom hardware.
The Digital Equipment Computer Users' Society collected many patches and enhancements for FOCAL. There were even major enhanced offshoots of FOCAL, such as FOCAL-W, which added many features, including better mass storage file I/O and even virtual variable memory.
In Russia, it saw use as late as in early 1990s in mass-produced home computers of the Elektronika BK series.
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