If you are examining a game on the ICS, issues the ICS command revert.
+If you are examining a game on the ICS, issues the ICS command revert. +In local mode, when you were editing or analyzing a game, and have been entering a number of moves by hand, starting from a position not at the end of the game, the revert command restores the game to the variation you started from. The variation you had been entering is currently added as a comment to the original move where you deviated. This can be applied recursively, so that you can analyze variations on variations; each time you create a new variation by entering an alternative move, the current variation will be shelved. Revert allows you to return to the most recently shelved variation.