Select All Noteheads in the Find section of
the dialog box.
Select Selected Notehead in the Change to section
of the dialog box.
Click Select next to Selected Notehead. The
Font dialog box appears.
Double-click on Slot 32. You return
to the Change Noteheads dialog box.
Click OK. The noteheads are replaced
with blank characters. To restore the noteheads, repeat the process. Instead
of selecting Selected Notehead, select Regular Noteheads and Click OK.
, and select a region. See Selecting musicfor some region-selecting shortcuts.