Re:scheme function help

[Peter Gentry]

This conversation is throwing much light on the difficulty that even the 
computer literate face when trying to learn the Lilypond
Scheme interface.

In this case the simple addition of a mark is seen to be very complex with 
procedures and arguments that are counter intuitive (or
at least nowhere near intuitive). Nor are they and their uses fully defined in 
the manuals (I'm sure it is obvious to a developer
but confusing to an outsider).

Secondly there are apparently several ways to skin the cat and contexts that 
are not immediately obvious.

Guidance at the gateway would be a very productive way to spread the use of 
Lilypond beyond highly qualified developers into the
more mundane world of the everyday user.

None of this is criticism of the project which is a remarkable achievment - 
more a cry from the wilderness for a helping hand to
newcomers. Actually not so much a helping hand more an appreciation of the 
misconceptions and misunderstandings that plague the
tyro.