mirror the current selected object.
When select mirror command, a parameter setting box will appear as the Figure shows.
Scale: the zoom ratio of the X/Y size after being mirrored.
The current object’s vertical mirror.
The current object’s horizontal mirror.
Select a datum mark of an object.
Apply to copy object: This item is used to copy the current selected object and mirror it into a now place.
Apply: Let the modification of the current object active.