NAME
M - Stands for memory/mapping
SYNOPSIS
use M;
my $name = $M::num2month->{ '01' }; # january
my $num = $M::mon2num->{ jan }; # 01
DESCRIPTION
M contains small, shared lookup tables or could be used to cache things.
DATA
$num2month
Hash reference mapping month numbers to lowercase month names.
It contains keys in both zero-padded string form ('01') and numeric form (1).
$mon2num
Hash reference mapping 3-letter lowercase month abbreviations (jan, feb, ...) to zero-padded month numbers ('01' .. '12').