po/ Translations for binaries and end-user scripts
ps/ PostScript library files
python/ Python modules, MIDI module
- aux/ Python modules used by maintenance scripts
+ auxiliar/ Python modules used by maintenance scripts
or in the build process
scm/ Scheme sources for LilyPond and subroutine files
scripts/ End-user scripts
- aux/ Scripts for maintaining the sources and scripts
+ auxiliar/ Scripts for maintaining the sources and scripts
for the build process that need not be built
build/ Scripts for the build process that must be built
stepmake/ Generic make subroutine files