[MEI-L] page sizes; multiple staff sizes; def. of point

[Andrew Hankinson]

Perhaps I'm muddying the waters, but should we start looking at ways of further separating the musical structure from the actual appearance? More specifically, using CSS to control the appearance of elements, rather than interweaving the visual and semantic structure.

For instance, page margins, staff sizes, cue sizes -- all of this could be specified in a different style sheet for different media: print, tablet, mobile phones, web browsers, etc. A print style sheet could specify in points or inches; a display stylesheet could specify in pixels, ems, or proportions. Different media will have different presentation needs, and if we're to make sure that MEI can operate in both the physical and digital worlds simultaneously, this question will become more important, not less.

I'm not *completely* convinced of this since it does complicate lots of things, but I think it's worthy of at least a bit of discussion.

-Andrew

On 2012-11-07, at 5:27 PM, Laurent Pugin <laurent at music.mcgill.ca> wrote:

> 
> 
> On Wed, Nov 7, 2012 at 10:25 AM, Byrd, Donald A. <donbyrd at indiana.edu> wrote:
> On Tue, 6 Nov 2012 21:49:55 -0800, Craig Sapp <craigsapp at gmail.com> wrote:
> Hi Don,
> 
> On Tue, Nov 6, 2012 at 8:54 PM, Byrd, Donald A. <donbyrd at indiana.edu> wrote:
> 
> 
> Finally (and I suspect MEI already handles this), I'd like to point out
> that two sizes of staves -- "normal" and "cue-size" -- aren't always
> enough; there are published performing editions that use three staff sizes.
> (In fact, I wouldn't be surprised if editions with _four_ sizes exist,
> though I don't know of any.)
> 
> 
> I have seen at least three sizes in a score before, and this would
> theoretically allow for four sizes:
> 
> In a piano/instrumental score, the piano part typically has the
> instrumental part displayed above it in a slightly smaller size.  And I
> have seen ossia parts for the instrumental staff which in turn would be
> smaller than the instrumental staff size.  So if the piano part also had an
> ossia, then there would be four staff sizes, unless the ossia for the piano
> is the same size as the instrumental part (which it probably should).
> 
> Right. My list of CMN extremes
> 
>  http://www.informatics.indiana.edu/donbyrd/CMNExtremes.htm
> 
> lists the J. C. Bach Concerto for Harpsichord or Piano and Strings in E-flat, Op. 7 no. 5 (Dobereiner ed., 1927), where the 3rd size appears briefly, for an ossia. I'm sure I've seen other instances but I can't recall any; if you have other(s) handy, I'd love to hear about 'em (though I'm not sure others on this list would).
> 
> The number of possible sizes would be unlimited since it can be defined for every staff individually (in staffDef element) if necessary. Our proposal was nonetheless to have a cue-size for the most common cases where we have only one size of cue-size staves and to have it defined at a higher level (in scoreDef element).
> 
> Laurent
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