Use these tokens when you wish to set the first letter of the work week (in the current language) with different type attributes than the rest of the word.
The use of [W], [Ww], [WW] is analogous to the use of [D], [Dd], [DD].
•[W] = 'W' in English and 'S' in French.
•[Ww] = 'eek' in English and 'emaine' in French.
•[WW] = 'EEK' in English and 'EMAINE' in French.
To base the conversion of either of the present tokens on the value of the [wk] token rather than the [week] token, append the :sh modifier to the end of the token. For example : [Ww:sh] and [WW:sh]. The use of [W:sh] is also possible, but it is rarely used, except for languages where the first letter of the month names differs from the short to the full version of the name.