With Architect 3D, you can undo or redo actions from the Edit menu, or dynamically using the History pane in the right sidebar.

To undo an action

• Choose Edit > Undo (or press Command-Z). The previous action is reversed.

To redo an action

• Choose Edit > Redo (or press Shift-Command-Z). The previous action is reversed.

To undo a series of actions

1 Click the History tab in the right sidebar. The history list appears, with the most recent action at the bottom.

2 Choose the point to which you want to revert. All actions after the selection are undone.

(alternatively) Click the Undo button to undo one action at a time. To redo a single action, click the right arrow button.

To undo all

1 Click the History tab in the right sidebar. The history list appears, with the most recent action at the bottom.

2 Click the Undo All button to undo all of the actions since opening the file.

To redo all

1 Click the History tab in the right sidebar. The history list appears, with the most recent action at the bottom.

2 Click the Redo All button to redo all of the actions since opening the file.