Trenches can have unique names for easier identification. This name can be changed or deleted as desired.
Open the design dialogue in a CAD-program.
Navigate to your trench:
Right click on the node you want the numbering to start from. Select Renumber trench:
The following window will appear:
Prefix will change the names. First for the nodes, and then for the trench.Here, the node names will be ABC and the numbering will start with 1 at selected node and increase with one to the next node. The trench name will be XYZ.
This will result in:
You can see the change trench name in the design window