It is helpful to consider some terminology:
Elements - the objects we add to the model.
When we add elements, we may need to select other elements that are already in the model - we call them the Reference Elements.
Reference-elements - those elements that may need to be in the model before we can add a new element.
To delete an element, ...
If you want to delete a Reference-element you may also delete those elements that can only exist with the Reference-element.
A pop-up warning will list those elements that you will also delete in addition to the Reference-Element.
Thus, it may be useful to review the relationships before you delete an element.
It is also possible that you cannot delete an element before you delete a Reference-element.
To open the Reference Elements dialog-box
1.Click an element in the graphic-area or the Assembly-Tree so that it shows in Selection-Window
2.Right-click the element
3.Click Show Element references in the contextual-menu.
Example 1: Reference-Elements of a CAD-Line:
Its reference-elements are simple - there is a Point at each end of the CAD-Line
The Point22 is the start-Point of the CAD-Line
The Point25 is the end-Point of the CAD-Line
Example 2: Reference-Elements of a 2D-Cam
Its reference-elements are:
•those elements that in the model before you can add the 2D-Cam (a Profile and a Part ( which is also defined by its start-Point and end-Point at the end of its CAD-Line).
and Reference-Elements are:
•those elements that you may add to the model, and need the 2D-Cam to exist in the model ( e.g.: we may add a Polyline to the 2D-Cam)