[MEI-L] coordinates

[TW]

Dear MEI list members,

I'm exploring different approaches to music encoding and am especially
interested in the relationship between graphics and semantics as well
as graphical flexibility and precision.

One basic question about the graphical capabilities of MEI is how the
x/y coordinates are meant to work.  What is the "output coordinate
system" that the schema talks about?  Is it page based, staff based
like in SCORE, staff/measure based like in MusicXML or maybe dependent
on context?  Is there a standard unit like MusicXML's "tenth" or is
the encoder free to choose units of his liking?

Thanks
Thomas Weber