&nbsp;figure&nbsp;with&nbsp;a&nbsp;grid.&nbsp;The&nbsp;drown&nbsp;images&nbsp;are&nbsp;normalized&nbsp;to</span><br>
<span class=help>%&nbsp;&nbsp;exactly&nbsp;fit&nbsp;the&nbsp;subwindows&nbsp;given&nbsp;by&nbsp;the&nbsp;grid.</span><br>
<span class=help>%&nbsp;&nbsp;<span class=help_field>Control:</span></span><br>
<span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;Left&nbsp;mouse&nbsp;button&nbsp;...&nbsp;draw&nbsp;line.</span><br>
<span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;Right&nbsp;mouse&nbsp;button&nbsp;...&nb