Combining Selections

The Channels palette is also the place to combine selections manually. You can combine any active selection with one saved as an alpha channel. To do so, take the following steps:

1. Save your selections in alpha channels by clicking the "Save selection as channel" button in the Channels palette (Figure 3-7).

2. Ctrl-click (Windows), ^-click (Mac OS) on one of the alpha channels to load selection.

3. Use the following modifier keys while you click the second alpha channel:

To add, press the Shift key.

To subtract, press Alt (Windows), Opt (Mac OS). To intersect, press both of the modifier keys.

At Step 2, you can also use the Select ^ Load Selection command and then make your choices in the Load Selection dialog box. The dialog box also gives you the choice of loading a second selection from another open document.

Saving selections as alpha channels gives you more flexibility than having to make decisions as you create the selections. Furthermore, you can tweak and twine them all you want.

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