Module:Sandbox/Luis150902/doc

Information
Uses Module:Arguments and Module:Yesno.

Usage
, where function_name is "f" followed by a natural number (N) and args is a pipe-separated list of arguments.

N = 1
Gets the length, in characters, of the first argument.

N = 2
Counts its arguments.

N = 3
Performs the operation specified by the first argument in the remaining arguments.

Available operations: +|"+", -|"-", *|"*", "/", "%", "!" (boolean NOT).