I started using this program a couple weeks ago and despite my initial reservations (it wasn't quite what I was looking for), I've become quite impressed. I'd like to use this as an equation repository on several different subjects. I'd like to suggest a feature (ideally it's there and I overlooked it). It would be convenient to have an information box associated with each equation (accessible by clicking somewhere) that could be used to explain the equation, or define the variables used in the equation and what units the variables are expecting.
Thanks for your comments. In this version there is a way to enter a name for every equation (by clicking on the "name" under the equation line). You could add more information in the name. However, there is no feature that allows adding additional information. You could alternatively write the information in other equations, say the following equations.
I'll remember this request for a later version, though.