| Keyboard Shortcut | Menu Shortcut | Menu Location |
| Shift+B | Alt+S, B | Selection -> Box Select |
The Box Select command selects a rectangular region of the image in Image Mode.
Activate the Box Select command, click and hold the left mouse button, and drag a selection box. Release the mouse button to select the region.
To add more area to the existing selection, hold down the Shift key while selecting a region.
To remove an area from an existing selection, hold down the Alt key while selecting a region.
To clear the selection, press Esc (a Selection command must be active) or run the Clear Selection command from the menu.