in reply to Acceptance meta code embedded within input data?
Everything I've seen about % is listed as follows:
key/value pairs in a hash - %hash = ('key1','value1','key2','value2');
modulus - if $a = 2 and you did a print on $a %= 2, you'd get 0.
dereferencing - returning the value the reference points to.
I can't think of anything else % is related to.