[Denemo-devel] Added example of creating a cue from another part

[Richard Shann]

I've added to the gallery an example of a cue: A two part piece with a
snippet of one part appearing in smaller notes just before the second
part enters. A great example of what LilyPond is capable of, and now you
can edit the parts graphically in Denemo and the cue will change as if
by magic.
It makes me think we should add a lock feature to LilyPond directives,
so that they can be locked (e.g. in templates) to prevent accidental
deletion while editing notes, as it can be tedious to get them back,
especially if you are not sure what you deleted. You would unlock them
in the dialog.
Richard