fix(docs): include a note about anchor-to-file childof edges
@@ -256,6 +256,11 @@ Points toward::
semantic nodes
Ordinals are used::
never
+Notes::
+ <<anchor>>s should not be `childof` the <<file>> in which they reside. As an
+ optimization due to the overwhelming number of such edges, the parentage
+ relationship between these nodes is determined by the shared `corpus`,
+ `path`, and `root` VName fields.
[kythe,C++,"Enumerators are children of enumerations."]
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