Please do not ask me to take some material benefits from You, but as a father, not waiting for the son's demand, does everything for the benefit of the son, please bestow upon me whatever You think best for me: 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.