Sort alternate .abc in subdir 'Compact' under the booke dir. Use that as
the graphic for A5 output, assuming it will be vertically more compact.
Use Bear Dance as an example, as it has commentary that currently
overflows an A5 landscape page.
For the moment, transposed Bookes don't transpose and so don't use Compact.
A5 mostly did, but ran into trouble with longer comments on a tune.
This may give blank space after tunes where a long comment overflows
onto another page, but I think for now it's better to have each tune
at the top of the page.
Or rather, and this is the other change, in the middle of the page. Centre
the page content for A5 and Nook.
Since \newcommand takes a maximum of 9 params, move the notes, history
and closing \vfill for each tune from \showtune to the text generated
for each tune in dottes.tex.tune.
Jim Hague