Paint > Select > Marquee

Selects a polygonal, rectangular, or elliptical region of an image layer. Or selects a random shape region using a lasso.

The following selection tools are provided: Marquee (polyline), Marquee (lasso), Marquee (rectangle), and Marquee (ellipse).

To create a polygonal marquee, use the Marquee (polyline) tool, clicking down to create each line segment. Double-click to close the selection.

To create a circular marquee, hold the key while using the Marquee (ellipse) tool.

Similarly, to create a square marquee, hold the key while using the Marquee (rectangle) tool.

Marquee Options

Proportional: Turn on this option to create circle or square marquees from the Marquee (ellipse) and Marquee (rectangle) tools respectively.
Marquee Selection Mode: Allows you to create a selection area (New), add to the selection area (Add), or subtract from the selection area (Subtract).

Note
Use the “=” key to Add and the “-” key to Subtract. These hotkeys are customizable.

Note
These options are also available in the Paint Panel when this tool is active.