I can also pass away at any moment. That is nature's law. Nobody can check it. So that is not very astonishing, but my appeal to you on this auspicious day of the departure of my Guru Maharaja, that at least to some extent you have understood the essence: 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.