Working with Images > Drawings, Measurements, and Annotations
You can find the Undo and Redo functions in the Drawings & Annotations toolbar. See Using the Drawings & Annotations Toolbar.
The following characteristics apply to the Undo function:
In the Image Viewing Workspace, Undo affects only selected images. In the Darkroom mode, Undo affects only the image currently being viewed.
Undo applies only to actions in the Drawings & Annotations toolbar. It does not apply to actions performed using other toolbars.
You can undo up to a maximum of 50 operations.
You can use the Redo function to counteract the Undo function.
Drawings, Measurements, and Annotations
Drawing a Multi-Segment Line (Polyline)
Adding a Text Annotation to an Image
Changing Object Color and Line Thickness
Using Measurements to Calculate Distances and Angles
Using the Densitometric Analysis Tool