Hmm...my first thought was that, given that the opposite icon is "Ancestor of", they may have meant it as a catch-all for a more distant relationship than direct parent/child. (Great-great-great-grandpa Mike, say.) But I was remembering it wrong; it's "Immediate Ancestor of". So bah.
The Reference Guide (p. 45) indicates they're the same as well.
Last edited by Parody; August 29th, 2015 at 12:30 PM.
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