ved by clicking and dragging the left mouse button. Let's select some vertices and move them:</p>
 <table width="80%"  border="1" align="center" cellpadding="4" cellspacing="0">
   <tr>
     <td width="36" valign="top"><img src="Artwork/ttIconAction.gif" width="36" height="36"></td>
     <td><p>Use the mouse to draw a box around some of the vertices in the polygon (to draw the box, click and hold the left mouse button near the upper left part of the slice window, drag the mouse towards the lower right corne