2 - design macro for penstroke with rounded endings
3 - y-refpoint for rests should be the 4th staffline (gclef: b')
6 * stem-notehead attachments.
15 * 0 - 9: bold and italic
17 - include important spacing dims in fetalog
18 - lilyrules.mf for different rules (lines) ?
20 - hack up GS or the mf-gray font to do round pixels
21 iso. square pixels. (Printers don't do square pixels.)