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FOCAL (Formula Calculator)
- Written by Richard Merrill in 1968. Syntax is completely different but otherwise similar to BASIC.
- Line numbers are ##.##. DO ##.## executed as subroutine one line DO ## executed all lines in group.
- Only first letter of keyword needed. All letters took space so using only first saved space though made reading more difficult.
- Later versions supported file IO.
- Two nested for I = 1, 500 loops 15 minutes.