Re^3: Need to know on the differnece between the usgae of $st_mode and $'st

For CPAN historians, this trick was also used by what I believe is the first CPAN joke module (D'oh), released several years before the Acme namespace was invented by TheDamian in 2001:

D'oh by C.Nandor

I've also seen it employed in Perl Poetry, obfu and even golf (to improve the tie breaker by replacing sub SomeSub{...} with sub'SomeSub{...}).

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Syntactic Confectionery Delight
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Re^3: Need to know on the differnece between the usgae of $st_mode and $'st_mode what does the single quote refer to