prevKey attribute

The prevKey attribute specifies which keyboard response navigates back to the previous instruction page.

Member of

Syntax

/ prevKey = (expression, expression, ...)

Parameters

Name	Type	Description
expression	value	An expression that resolves to a keyboard character or scancode, or an integer values for a serial or parallel port device such as a response box.

Remarks

To disable the previous key so that participants can only navigate forward through the instructions, set this attribute to noResponse. The default value is the space bar the backspace key.

Examples

The following sets the previous key to the "m" key:

<instruct>
/ prevKey = "m"
</instruct>

The following disables the previous key by setting the value to noResponse:

<instruct>
/ prevKey = noResponse
</instruct>