To draw a Mesoscopic Transition Zone:

1. Click the MTZ icon .

   You are asked "Does this MTZ have any entrance/exit areas?".

2. For 'yes', press Enter, for 'no' type n and press Enter and then proceed to step 8'.
3. In the workspace, click and draw the MTZ at the appropriate location.

   You are asked if you would like to use a segment of the MTZ as a focal segment.

4. Follow the steps in Placing a Focal Segment .

   You are asked "Does this MTZ have an exit area?" By 'exit area' we mean a location in another part of your model where mesoscopically simulated Entities eventually emerge from. This may be a lift on another level or a carriage at another station. If you answer 'yes', you will be required to draw this new exit area in another part of your model; if you answer 'no', you will be required to place an exit segment on the object you are currently drawing.

5. For 'yes', press Enter, for 'no' type n and press Enter and then proceed to step 7'.
6. Draw the exit area in the appropriate part of your model. Your single zone will now appear to have two separate areas but they are part of the same object.

   The 'Edit Mesoscopic Zone' parameters dialog is displayed and you can proceed to 'Setting Mesoscopic Transition Zone parameters' below.

7. Select an edge of the MTZ to use as the exit segment (hold down <Shift> if you want to select a portion of the edge rather than the whole.

   The 'Edit Mesoscopic Zone' parameters dialog is displayed and you can proceed to 'Setting Mesoscopic Transition Zone parameters' below.

8. Draw the single-line entrance segment, following the steps in Placing a Focal Segment .
9. Draw the single-line exit segment.

   The 'Edit Mesoscopic Zone' parameters dialog is displayed.