I have given this idea all along - why you big leaders do not understand it? You should take it to heart as a guiding principle that somehow or other we always please Krishna by doing what is practical and necessary, according to time and place: 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.