Changes from MusiXTeX 123 to 124: + preserve changes to \transpose in an hboxed tremolo command + test that musixtex.tex has already been loaded in some extensions: + musixps, musixec, musixhv, musixplt, musixtmr, musixppff + changed from \it to \ppff in several places + support new command \setinterstaff{n}{m} + define \largenotesize, \Largenotesize + corrected typos \twtybf[g] \svtbf[g]