How is it possible that cropping a pdf is a complete ******* mystery? Should be:
1. Mark area
2. Click Crop
3. Done
Now it is
1. Click crop
2. Mark area
3. Click, nothing happens
4. Realize you should have double-clicked, WTF?
5. Start over, double-click
6. Get mysterious dialogue
7. Press OK
8. ???? nothing happened?