I should be able to make a text string uppercase / lowercase

(Missing Feature, Closed -> Fixed, Priority: Critical, Test Status: Unit tested , Reported By Bad Link: Thing 3y284oe not found, )
QL
Summary: Straightforward enough. Relevant for formatting/display, and possibly for comparison?
If you implement this as a single _toCase function, then Capitalized (Each Word Capitalized) and Proper (First letter upper) may also be useful, though I'm not sure if my nomenclature's correct.