Use this toUndo the last edit or group of edits
Before invokingA document must be open to use this option.
Command nameMUndo
Accelerator keyU (from the main menu: Alt+E > U)
Keyboard shortcutCtrl+Z
Options on parent menu (Edit+)Undo, Redo, Cut, Copy, Paste, Cut Extra+, Copy Extra+, Paste Plus+, Delete+, Select+, Block Select+, Find, Find Next, Incremental Search, Replace+, Go To+, Navigate+, Bookmarks and Marks+, Code Folding+, Extra+, Copy to Editor, Preferences