Channel Selection

Creates a selection based on a color channel.

Channel list

Determines the channel to select.

Feather

Softens the edge of the selection.

Expand

Increases the size of the selection by the specified number of pixels.

Selection list

Determines how the selection is added to other selections.

Invert

Selects the portion of the image outside the selection.

Note: To see the selection marquee, double-click the Channel Selection operator icon or double-click the layer in the Workspace panel.