in reply to
What Perl Source File do I Edit?
Not actually an answer to your question, but somewhat related: have your read perlguts, perlhack and perlrepository?
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
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