Feature Log: External References

External references are specifically marked in the feature log. The distinguishing between the types of reference is even more specific than during its actual use: If a feature log contains an external reference which is currently used by the part, this is indicated by an e in the icon, otherwise an a appears.(The property Use external references can be changed in the context menu of the feature log.)

External References
	Point option	Midpoint or end point of an edge, centre point of a circle etc. Given, e.g., for positioning points of standard bores.
	Edge	For example, an edge which is filleted or rotated about a facet.
	Facet	For example, a facet which is rotated or to which a part is trimmed.
	Plane	The plane can be a real plane in a part, but also be defined via 3 points or 2 straight edges.

The symbol does not appear when generating the processing, but only after the first Feature recalculation.