ates related to the same sort user just picked. Clicking on the
state "at_bag(Bag,Place)" in the substate list window will specify the
right hand side of the necessary condition and stop the flashing effect.</tt></li>

<li>
<tt>Change to edit mode by selecting the check box "Edit Mode". Drawing
canvas will change to dark green. The system reaches a situation that all
the variables of this operator can now be edited. "Zoom In" and "Zoom Out"
function will help user to adjust the viewing scale.</tt></li>

<li