The Photo region and Mask drawing tools can be found on the Photo region and Mask tool flyout on the main toolbar.

The Region Painter tool allows you to 'paint' over an area or object that you want to select. Choose an appropriate nib size from the InfoBar and create a shape by stroking over the object.

The Magnetic Lasso allows you to easily trace round objects in a photo to cut them out. This mode is enabled by default on the Magnetic Lasso mode toggle on the InfoBar. Disabling the mode lets you draw closed shapes around the areas or objects you want to select in much the same way as you would a pencil. It has a smoothing control and you can also hold down the 'Shift' key to erase your line as you draw. The Magnetic Lasso is described in detail in Photo Handling.

The Rectangle Region Tool tool lets you drag a rectangular selection around an area or object. You can modify your shape using the width and height settings on the InfoBar.

The Mask Painter tool allows you to 'paint' a pink mask over an area or object that you want to protect. Choose an appropriate nib size from the InfoBar and create a mask shape by stroking over the object.

Use the Show Mask or Region button to toggle the mask or region on or off. Turning off a mask/region in this way does not delete it, so you can get it back at any time by turning it on again, but while turned off it won't affect any mask/region-aware operations.

The Invert Mask or Region button inverts the masked area or selected region so that everything but the selected or masked areas are selected or masked instead.

Use the Clear Mask or Region button to remove all the shapes on the mask layer.