To Split an Area
1. Click > 
Split Area. The Split Area tab opens.
Split Area. The Split Area tab opens.2. Click Placement. The Placement tab opens.
3. Perform one of the following operations:
◦ When a sketch already exists, click Unlink to break the association with the sketch. An internal sketch is created using a copy of the sketch. Create a sketch and click 
OK.
OK.◦ When a sketch does not exist, click Define and set references. Create a sketch and click OK.
OK.4. Click 
to create the split area normal to the driving surface or click 
to create the split area normal to the offset surface.
to create the split area normal to the driving surface or click to create the split area normal to the offset surface.5. Accept the default projection direction or click 
next to 
to project the sketch to the other side or both sides of the reference plane.
next to to project the sketch to the other side or both sides of the reference plane.6. Accept the default area selected for the sketch or click next to 
to toggle the location of the new surface ID to the area inside or to the area outside of the sketch.
next to to toggle the location of the new surface ID to the area inside or to the area outside of the sketch.7. 
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