please,.....how mordente is inserted (~)?????
First download and install the Boxmarks font http://nwc-scriptorium.org/ftp/helpful/boxmarks.zip (http://nwc-scriptorium.org/ftp/helpful/boxmarks.zip) from the Scriptorium. Once in NoteWorthy, select the icon that looks like an open book (Page Setup) and click on Fonts. Choose a numbered "User" item and click on Modify to change it to your newly installed Boxmarks font. When you need it, insert text and choose that user font. A lower case "r" should give you a mordent.
You can see what else that (or any other) font can offer by clicking on "Start", "All Programs", "Accessories", "System Tools", and then run "Character Map" to see what the various characters will give you.
Hope this helps.