The choices in the Edit > Clear Special pallet do not include violin markings such as upbow or downbow. If you have a large file with many markings you have to shift select every individual one before clicking delete or hide. This is true for other kinds of markings also. The Edit > Select Special menu is much more limited if you just want to find all your markings. What I'd like to see is the ability to right click on any marking and have a "select all" choice without having to click on every one or delete all. A search and replace feature would be even better in case you wanted to for instance change all your ff to f or all your upbows to downbows.