PhotoPlus X6 User Guide - Serif

90 Manipulating Images
Making the selection larger or smaller
If the selection you've made isn't quite the right shape, or doesn't quite include
all the necessary pixels (or perhaps includes a few too many), you can continue
to use the selection tools to add to, or subtract from, the selected region.
To add or subtract to/from the existing selection with a selection tool:
• Select the tool and drag while holding down the Shift or Alt key,
respectively. The newly selected pixels don't have to adjoin the current
selection—it's possible to select two or more separate regions on the
active layer.
Modifying the selection
Once you've made a selection, several modify selection operations can be used in
combination to alter the selection area. Feather, smooth, contract, and expand
operations are possible from a single Modify Selection dialog, along with the
popular Grow, Similar, and Invert available separately. Combining the
operations in a dialog improves efficiency, and lets you preview your modified
selection directly on the image as you make changes. Several preview methods
are possible.