Perimeter geometry refers to the two entities either side of a perimeter slot.
Slot Optimisation Settings - Perimeter Geometry
Automatically optimise perimeter geometry
Switch this option on if required.
Resequence
Press this button to switch to the entity resequencing mode. Here you can identify the two perimeter entities in the order they are to be output. The numbers against the entities will be altered to reflect the changes.
Switch Direction
Press this button to switch the direction of either of the perimeter entities. Select the entity or entities to change. The direction arrows will be altered to reflect the changes.