But there are so many macros that just replace one name with the same name with things like S_ or PL_ infront of it. I couldn't figure out why such a thing was needed.

Also at times variable types like int, char and other terms like like volatile have been custom names through macros. Couldn't understand why that was done.

In reply to Re^4: Perl 5 interpreter by Anonymous Monk
in thread Perl 5 interpreter by Anonymous Monk

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