env.Alias ('doc', 'lilypond-internals/lilypond-internals.html')
all_sources = ['SConscript',] + sources + pngs
+
ballprefix = env['ballprefix'] + '/Documentation/user'
ball = Builder (prefix = ballprefix + '/', action = 'ln $SOURCE $TARGET')
et = env.Copy (BUILDERS = {'BALL': ball})