More Opcodes information from opnames.h and opcode.h The canonical list of operator names is the contents of the array PL_op_name, defined and initialised in file opcode.h of the Perl source distribution (and installed into the perl library). Each operator has both a terse name (its opname) and a more verbose or recognisable descriptive name. The opdesc function can be used to return a description for an OP. WWW: http://search.cpan.org/dist/Opcodes/