§A system family is a built-in
object in Revit. There is a designated class for it. You can use it
to identify the element.
§A component family has a generic
form as FamilyInstance/FamilySymbol. Category is the way to further identify
the kind of object it is representing in Revit.
§Depending on an element you are
interested in, you will need to check the following:
§Class name
§Category property
§If an element is Element
Type (Symbol) or not
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