Tranformations!

For years now I have thought that there should be an easy way to capitalize or de-capitalize selected text. I always imagined it would be a key on the keyboard, but I just discovered that it exists in the magic world of right-click!
If I'm composing or editing text and I right-click, one of the options is "transformations" then the options are "Make upper case", "Make lower case" or "Capitalize". This is SO useful for editing the title of journal articles so that each letter isn't capitalized (this is often the case when I download the citation, but most bibliography styles require lower case).
For how long have I been tediously changing one letter or word at a time? Is this a Mac-only thing, or can my non-Macophile readers do this too?