Comment 4 for bug 170546

> Cutting and pasting an image into a new document
just to save it solo is needlessly complicated, not to
mention a resource hog

Select, Invert Selection, then Cut, would probably be more
resource efficient than cuttting and pasting to a new
document.

If any of the commenters were the original reporter of this
request could you please say, and leave you name and contact
details should the developers require any follow up
information.

Screenshots of how other programs present this functionality
might also be useful.