Changes the current short date format. The format of the date is a string which contains variables that will be replaced:
%Y with the whole year (e.g. "1984" for "1984")
%y with the lower 2 digits of the year (e.g. "84" for "1984")
%n with the month (January="1", December="12")
%m with the month with two digits (January="01", December="12")
%e with the day of the month (e.g. "1" on the first of march)
%d with the day of the month with two digits(e.g. "01" on the first of march)
%b with the short form of the month (e.g. "Jan" for January)
%B with the long form of the month (e.g. "January")
%a with the short form of the weekday (e.g. "Wed" for Wednesday)
%A with the long form of the weekday (e.g. "Wednesday" for Wednesday)
Everything else in the format string will be taken as is. For example, March 20th 1989 with the format "%y:%m:%d" results in "89:03:20". name="format" The new short date format