An initial underscore already conveys strong feelings of magicalness to a C programmer.
Odd that we think definitions are definitive.
Well, hey, let's just make everything into a closure, and then we'll have our general garbage collector, installed by 'use less memory'.
Perhaps you should compile your Perl with long doubles one of these megaseconds.
Most of you are familiar with the virtues of a programmer. There are three, of course: laziness, impatience, and hubris.
It's there as a sop to former Ada programmers.