(in surveying) The plotting and calculation between four objects/point of reference. (Psychology) A conversation happening between two people, but two further people are brought in by the 2nd party for no real reason, then confuse the matter further.
The ability to change two things.
Similar to Swapoverable Relates to the continuity of services in the event of an outage.
The ability of remote controlling a PC with the Teamviewer application.