Adobe PHOTOSHOP 5.0 User Manual page 263

5 Click Invert if you want to make the nonselected
areas selected and vice versa.
6 If the destination image already has a selection,
indicate how to combine the selections. (For
information on these options, see step 5 of the
procedure on saving a selection to a new or
existing channel in "Creating and saving alpha
channels" on page 252.)
Click OK to load the selection.
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