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Glad to hear I'm not the only one who's had trouble with this. I remember reading some C code once and I saw some strange operators I had never seen before... <? and >?, if I remember correctly.

I eventually figured out they were GCC extensions for "min" and "max", but only after a painful experience trying to get more info out of Google than "here's how you do addition and multiplication in C!"

http://www.google.com/codesearch?hl=en&lr=&q=lang%3A...

$. -> "perldoc perlvar" -> $INPUT_LINE_NUMBER -> http://www.google.com/search?q=%24INPUT_LINE_NUMBER+perl

http://www.google.com/codesearch?hl=en&lr=&q=lang%3A...