On 2/17/26 09:58, Jonathan Scott wrote:
    ...
- A new option COMPAT(SETAABS), where the NOSETAABS option includes the minus 
sign (although for compatibility within a release the default must remain 
compatible).

Bad history.  If at some point in history the Ref. did not say
"absolute value", the first user to notice the misbehavior
should have reported it as a defect, not unethically
exploited it;  It should have been repaired and users who
complained about the behavior change should have been
rebuffed for expecting behavior contrary to specification.

Doing otherwise nurtures chaos.

--
gil

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