The Edit menu contains the following items:
Undo undoes the last usage of these tools from the palette--Flip, Rotate, Pan, or Zoom.
Palette contains the Pan, Rotate, Selector, Flip, and Zoom.
Properties displays the Properties window where you can set--
If images are viewed in color or gray scale.
The number of colors used for rendering images.
If the palette is automatically displayed when an image is opened.