Figure S1: Keeping the mouse still while reading (user 16). The image on the
left shows the eye movements, and the image on the right shows the mouse movements.
The areas of the circles are proportional to the amount of time that the user was
fixating on (or had their mouse pointer over) that point. The numbers indicate the
sequence of movements.
Figure S2: Using the mouse to mark an interesting result (user 14). As above,
eye movements are on the left and mouse movements on the right. Here, the mouse was
used to mark result 1 and then result 3 as interesting, before the user eventually
decided to click on result 5 (hovering over its title while reading its snippet, and
then leaving the mouse there while checking result 6).