Hacking Selection Mask - Part 4

You have two choices of rotation.
First, choose Select➜Transform Selection and then move the pointer outside the bounding box.
Another option, which you may have more control of it. After choosing Transform Selection, insert the cursor in the Set Rotation text field on the options bar and then just use the Up/Down Arrow keys to adjust the rotate angle.

Inversing Selections. To select unselected areas or if you want to deselect everything, choose Select➜Inverse or press Ctrl+Shift+I (Windows), Cmd+Shift+I (Mac OS). To revert/apply again, just press repeatedly .

Growing Selections and Adding Similar Colors. After you have made selections, you can use Grow/Similar command to expand the selections. Photoshop uses the tolerance set for the Magic Wand tool to determine which pixels to add to the selection. Having used the Magic Wand tool to select a range of colors, you can add to the range by holding down Shift and clicking another sample area. However, sometimes that can yield unexpected results.

Loading Selections from Open Documents. To load a selection from another open document, you may either drag and drop between source and target document windows or save the selection as an alpha channel from the Channels palette and then choose Select➜Load Selection. In the Load Selection dialog box, choose the source document and the alpha channel from the pop-up menus. This method has the added advantage of giving you the option of adding, subtracting, or intersecting the incoming selection with any active selection in the target document.

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