@Rick Brewster:
It would be nice the Magic Wand has smoothed edges, even for the general use.
By the way, we can stock selections in layers as well.
@AndrewDavid:
For information, the workaround I follow is this one:
Save selection procedure:
. Create a new layer.
. draw the needed selection.
. fill the selection as black, using the Can of Paint.
. Select all (Control+A).
. Copy (Control+C).
. Paste as a new image (Control+Alt+V).
-> please note the edges are smoothed.
. Save the new image, as any format (transparency is useless).
Re-recreate the selection:
. open the original image.
. import a file as a layer, using the selection image.
. uncheck the base layer (the pixels of the original image).
. be sure to select the selection layer.
. Use the Magic Wand, in global mode, to select the black pixels (they follow the original selection edges).
-> please note the new selection's edge is "pixelized" (not smoothed).
. check the base layer (the pixels of the original image).
. uncheck the selection layer.
-> now we have an ordinary selection on our image.
. the selection layer can be deleted if not needed any more.