I've used edit mode of a program called Thumbsplus to take an image of
200H x 210W and reduce image by 10W starting from the left. Is there a
similar feature in the crop tool of GIMP for quickly reducing a height or
width without free selecting the whole image minus 10W? When I try the
"fixed" I seem to have trouble getting my selection area lined up with the
image right side.
Gimp-user mailing list