Stickys for your DAW ?

I would love to be able to freely drop notes over the wave form track area of my DAW. I'm using Reaper. Basically this amounts to Stickys , little memos one leaves behind to remind oneself of issues, action items etc. In the case of a DAW these notes would be associated with a specific position on a timeline and for a specific track. Global markers can already be left in Reaper but they just amount to a label on the timeline. There is not much room to leave much of a note at all. Pretty powerful way of getting the big picture , whether the project is still an evolving tune or whether everything has been tracked and is ready for mixing. Some other Reaperites feel the same way. See here. Hopefully it will catch on.

If the reader knows of any DAW that already does something like this please drop me a post. thanks.