Edit

    Spock now has an edit menu. This is a new feature as of Feb 1999. The edit menu's sole functional option is an ``Undo'' feature. This option implements a 1-level undo function which will undo the most recent ``undoable'' action. Currently undoable actions are: FBRT, Rotamer, TOR and Subset rotations (See §6.7.13 and § 6.8); Motion undo which will undo the last rotation/translation; Mutate undo §6.7.14; and worm atom, bond, helix, sheet and vertex coloring commands §5.2.1.