If you want to crop an object (a non-isometric inclined star shaped object for example) with the smallest width/height possible without cutting any bits of this object, you generaly create a rush selection then adjust the borders ; and, if you know the trick this can be done in 3 clics (or less!). Without the ability of resizing the selection you can go crazy by redoing the whole selection again and again before each border fits perfectly which is time-consuming. There are more annoying examples of these.

Being able to resize the selection is a very important feature considering the goal Pinta is aiming IMO. :)

suggested 11 years ago