Trying the Mouse Gestures

To use a mouse gesture, press and hold the backslash key (\), then click and hold the left mouse button, and move the mouse in the direction indicated.

A red line traces your mouse movement on the canvas.

When you release the mouse button, the tracing disappears and Mari performs the function you selected (in the illustration, the Clear Painting function).

Experiment:  Try several of the mouse gestures. (You may have to paint something before you can try some of them!) The mouse gesture shortcuts are not shown in the Manage Keyboard Shortcuts dialog, but can be located in Keyboard Shortcuts.