The Rectangle Tool
The Rectangle Tool is selected from the Image Toolbox. Its behaviour varies depending on the currently selected Rectangle Tool Options.
To form a rectangle, move the mouse to where you want one corner to lie, hold the mouse button and drag the mouse to where you would like the opposite corner to lie.
The Rectangle Tool Options
1. Outline: Will draw an “empty” rectangle using the currently selected brush. The brush will behave differently depending on the Draw Mode.
2. Solid: Will draw a solid rectangle of colour. “Ink” if the left button is used, “Paper” if the right button is used.