Wow! That was a major oversight from my part.
Thanks a bunch guys; I've installed the last version, 2.49, from the official site and now the
function mode is there, of course.
And on top of it, the built-in Python function
Title-case did exactly the trick I needed!
Which is freaking awesome!
Thanks again and a big thank you also to Kovid and everyone else who contributed to this suite of amazing software.