... all caps because it's an acronym.
The two "acronyms" for Perl are actually backronyms and are more for fun, so the normal rule of upper-casing all letters in an acronym do not really apply.

Elda Taluta; Sarks Sark; Ark Arks

In reply to Re^2: To Perl or not to PERL. by Argel
in thread To Perl or not to PERL. by jethro

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