"Documentation by paper"

[Robert Dewar]

A little followup on Dominator. I looked through a bunch of
Google references, and indeed there is a variation on whether
people consider that a node can dominate itself. Some authors
use the term strict dominator to refer to the relation that
excludes A dominating itself, but others use simply Dominator
to refer to this.

That's typical of little variations that can cause endless
troubles if you don't have accurate sets of definitions.