If you use a 6-button mouse — a mouse with two extra buttons on the side, sometimes called the back/forward buttons — Sensory Readable maps those buttons to its core reading controls. This gives you hands-free reading: just position the mouse and click a side-button to read.

A 6-button mouse with the two side buttons highlighted by a red box. Button 4 (back) is labelled 'speak word pop-up'. Button 5 (forward) is labelled 'speak text under mouse'.
The two extra side buttons on a 6-button mouse — what each one does in Sensory Readable.

The standard button mapping

By default, Sensory Readable maps the two extra buttons (often labelled "back" and "forward" or button 4 and button 5) to:

Side button 1 (back / button 4)
Equivalent to Ctrl+Shift+hover — reads the single word under the pointer and opens the Word Information popup with definition, pictogram, and homophone links.
Side button 2 (forward / button 5)
Equivalent to holding Ctrl+hover — reads text under the mouse pointer in the current Hover Read mode. Hold the button down to keep reading; release to stop.