@PaniczGodek Back then, WHEN/UNLESS also didn't exist. And you'd write stuff like:
(AND (> (LENGTH SYSTEM-COMMUNICATION-AREA-QS) 40)
(ERROR '|SYSTEM COMMUNICATION AREA OVERFLOW|))
Which using IF becomes quite ugly. The above is quite common.
@PaniczGodek Back then, WHEN/UNLESS also didn't exist. And you'd write stuff like:
(AND (> (LENGTH SYSTEM-COMMUNICATION-AREA-QS) 40)
(ERROR '|SYSTEM COMMUNICATION AREA OVERFLOW|))
Which using IF becomes quite ugly. The above is quite common.
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