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+
+HELP PAGE FOR COMMAND invert
+
+SYNTAX
+invert [MOVES|$ID|@ID]
+
+DESCRIPTION
+Inverts a sequence of moves, which can be given also as $ID or @ID. The given
+sequence must not use NISS (if it does, use the command unniss first).
+
+EXAMPLES
+invert F R D'
+  Prints D R' F'
+