This will always be a beta version of html-music because the glyphs in the musicalsymbols font will be used for images of notes, rests, clefs, etc., and ems will be used for the positions of the glyphs and for properties of stave-lines, bars, stems, beams, etc. That makes all of this scalable, by choice of the font-size, but no matter what the units and because of roundoff and/or truncation errors, results in some font sizes look all right while in other sizes, especially small ones, the results look pretty bad. My plan is to develop html algorithms for most of the musical typsetting here, and then, at least once if I have the stamina, to construct a nonscalable version where images are always images and everything is measured in pixels.