Usually I use breakpoints in batch processing, for example level, warp, crop.
Upon completing the last adjustment in the final breakpoint, my finger is often on the F1 shortcut
To keep using shortcuts in the test dialog box, a suggestion :F1 -- Simulates clicking the OK button in the currently open transformation dialog box, if any
F2 -- Simulates clicking the Cancel button in the currently open transformation dialog box, if
F1 = Process - process the current image.
left arrow = Back - skip processing of the current image and go back to the previous selected file in the list, if any.
right arrow = Skip - skip processing of the current image and advance to the next selected file in the list, if any