Determines whether a stimulus is erased at the end of a trial.
<button> <clock> <picture> <port> <shape> <sound> <text> <video> <xid>
A value of 1 indicates the stimulus will be erased. A value of 0 indicates it will not.
The following displays the value of erase in a text stimulus:
<text sometext>
/ items= ("erase = <% text.sometext.erase %>")
</text>
The following displays the value of erase in an instruction page:
<page somepage>
erase = <% text.sometext.erase %>
</page>