width attribute

The width attribute specifies the width of a visual stimulus.

Member of

/ width = width

/ width = expression

Name	Type	Description
width	extent	The width of the stimulus in pixels, percent(default), or points.
expression	value	An expression resolving to the width of the stimulus in pixels, percent(default), or points.

The default unit is percentage of the vertical width of the presentation window.

The following sets the width of a clock to 5% of the screen width:

<clock timer>
/ mode = timer
/ width = 5%
/ timeout = 300000
/ position = (50%, 10%)
/ format = "mm:ss"
</clock>