You shall try to learn the various literatures very carefully and present everywhere in classes and books, that is very good. This is a nice idea and if you can do it, it is great service and Krsna will bless you: Revision history
Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.