They don't mind even if they become a dog next life. Is it not? This is Western civilization. They say plainly, "What is wrong? I'll forget." Such degradation has taken place in the human society: 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.