Documentation for infix le assembled from the following pages:
Language documentation: Operators §
From Operators
(Operators) infix le §
multi sub infix:<le>(Mu, Mu)multi sub infix:<le>(Str, Str)String less than or equal to operator.
Coerces both arguments to Str (if necessary); returns True if the first is equal to or smaller than the second, as determined by lexicographic comparison.
Mnemonic: less or equal