-When entering half music (i.e. for students to complete by hand)
-you need the spacing to correspond to the timing -- all measures
-same length, etc. This thing implements it by adding invisible
-staff with lots of fast notes. "
+When entering partially typeset music (i.e. for students to be
+completed by hand), you may need the spacing that correspond to the
+timing of notes: all measures have same length, etc. It can be
+implemented by adding an invisible staff with a lot of fast notes. "