Click the Discard Brush Tool.
Click and drag on the image to mark the areas to discard. Cutout Studio locates similar adjoining areas and extends your selection to incorporate them.

Click Undo if you inadvertently select an area that you do not want to delete or select the area with the Keep Brush Tool.
Click the Keep Brush Tool.
Click and drag on the image to mark the areas to keep. Cutout Studio locates similar adjoining areas and extends your selection to incorporate them.

Click Undo if you inadvertently select an area that you want to delete or select the area with the Discard Brush Tool.
To zoom in and out, use the Zoom tools.

If you're using a wheel mouse, zoom in and out by pressing the Ctrl key while rotating the wheel, or, by holding down the wheel (middle-button wheels only) while rotating it.
To pan an image (after zooming in) press the centre mouse button and then drag on the image until the area of interest becomes visible.
To clear your selection, click Reset.