But, since we're talking about chords and that, here's a question, and it's not technical.

When I'm writing the chords for a song, I've got the habit of using upper case letters (A,B,C) for the major chords, and lower case (a,b.c) for the minor chords. It seems obvious, and has the advantage of making it a bit easier to fit in a succession of changing chords against the words of a song, if need be, than it would be if I had to put Am etc. Anyway, I'm lazy.

So the question is, does anyone else do it that way? I'm sure I must have come across it somewhere before I started doing it.