Music score (ABC notation)
If you want to store a small snippet of musical score with your song, such as a reminder of the guitar riff, etc. you can use ABC notation. After loading the required song, open the right hand options menu, select the 'Song' category and click on 'Music Score'. You will then be taken to the notation editor.
This window allows full ABC notation text, but is not designed for large scores (you will need to scroll otherwise).
You can also assign one of the custom page buttons to display/edit the ABC notation.
To find out more about ABC notation, you can check the abcnotation.com website