set_month_format(format_name)

set format of output of the month text returned with mo.

The paramter can be accepted following values.

• "long" : month name, e.g.) "December"
• "short" : abbreviation for month name, e.g.) "Dec"
• "number" : month as a number, e.g.) "12"

• format_name (text) : "long", "short" or "number". The default value is "number".

text