I've tried using the composition module, and one of the things I really like is how easy it is to do a print out. It's also nice that you can put a source in so easily. A problem with a composition module is that you can't move a block of notes out of a composition module to combine them with a block of notes in another composition collection. I would suggest making it possible to copy notes from one composition collection and paste them into another composition collection, just as you can do with a notes collection. Another suggestion would be to make it possible to categorize notes in the composition module in the same way you can do in a notes collection, by pressing control G and adding a category tag. That would make it easier to tag a group of notes as already used for a particular manuscript.
In the next patch release,
In the next patch release, users can click the right mouse button in the composition module and select "Categories..." to add tag to the selected note.