PianoStaff display problems

[Ruven Gottlieb]

Hi,

If I don't put anything in the lower staff of a PianoStaff, the lower 
staff won't be displayed. E.g. I just want to notate the treble part 
because I want to write the bass part in by hand because I'm working out 
chords.

I tried putting the ending bar in the bass clef. No dice.

I tried just putting in spacer rests, but that didn't work either. If 
that's all there is in the lower cleff, it won't display.

I finally put in transparent notes, but the notes play via MIDI, so 
that's no good either.

Seems that proper behavior ought to be that if I specified PianoStaff, 
both staves ought to print whether or not I put anything in both staves. 
The empty staff ought to be as long as the one with notes in it.

Ruven