Numbers at end of Play strings

[TerryRitchie]

Thank you.
(I am also musically trained)

Sorry for the long winded response.

No probs: I just wanted to save anyone from going through a whole music course unnecessarily. 
(It's usually better to assume someone doesn't have the background knowledge than go way over their heads)!

Did you notice the Edit in my post? This may be something you'd like to cover in your Tut, as it seems to be an
undocumented feature: L8A is not the same as A8, but it can appear to be (L8 will carry on into the next Play, while A8
only holds for the one note.

Yes, L sets the default note length for all following notes. Handy for those measures of eighth, sixteenth, or thirty second notes in a row.

I just looked at the Wiki and it appears misleading. Instead of "Sets length of a note " I believe it should be "Sets the default length of all following notes".