If the input line starts with ! all remaining input will be sent unchanged to /bin/sh

If the input line starts with p! all remaining input will be sent unchanged to the perl interpreter

Input within curly braces will be sent unchanged to the perl interpreter.

Tries to detect perl builtins - this is helpful if you e.g. have a print command on your system. This is a small, minimal version without options which will react on your own sub's or on a limited list of important perl builtins. Please also see the strategy perlfunc_heavy

This strategy will search for an executable file and execute it if possible.

All input will be evaluated by the perl interpreter without any conditions.