How do you undo rotation in GIMP?

To undo rotation in GIMP and restore the original image view, you can use the "Reset Flip & Rotate" command.

Here's how:

1. Go to the View menu.
2. Select Flip & Rotate (0°).
3. Choose Reset Flip & Rotate.

This will revert any rotations or flips applied to the view of the image, returning it to its original orientation. This doesn't undo any actual transformations you've applied to the image data itself (like using the Rotate Tool), but rather resets how the image is displayed in the GIMP window. If you have rotated the image data, you will need to use the Undo function (Edit -> Undo) or revert to a previous save to truly undo the rotation.