Nothing fancy. Just the ability to view all the entries, in a list format (each entry has a name, much like a file name). Clicking on the entry would open up the full blown text, in large readable font, and scrollable.
Main challenge here would be text entry for new 'notes'. The OSK does not allow for RETRUN key, and was not design with extensive data entry in mind
I envisioned something like the PalmOS 'NotePad' app. Simple is better.