I have installed the Boxmarks font and I am using it successfully fro Rehearsal Letters and Multi-bar rests. I can see the other notations/symbols within the font, i.e. the sloped lines used to indicate a drum roll, but I don't know the relevant codes/keys to add these
Assuming you are using XP or Windows 7, click on the Start Button, then choose All Programs, Accessories, then System Tools. Now run "Character Map" and change the font being displayed to your Boxmarks font.
Thanks - got it now