sp;erase&nbsp;the&nbsp;focused&nbsp;subwindow.</span><br>
<span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;Middle&nbsp;mouse&nbsp;button&nbsp;...&nbsp;call&nbsp;function&nbsp;which&nbsp;proccess&nbsp;the</span><br>
<span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;drawn&nbsp;data.</span><br>
<span class=help>%</span><br>
<span class=help>%&nbsp;&nbsp;The&nbsp;function&nbsp;called&nbsp;to&nbsp;processed&nbsp;the&nbsp;drawn&nbsp;data&nbsp;is</span><br>
<span class=help>%&nbsp;&nbsp;prescribed&nbsp;by&nbsp;option