No, not an old video game system, it's a technical term for "Capture" in one of the oldest boardgames known to man, GO. For an introduction to the game, visit this website.
Last year, at TriaDCon 2006, the University of Maryland sponsored a GO games workshop, run by Mr. John Goon. The event was a big success and will be repeated again this year! For details, view the TriaDCon GO page: http://www.triadcon.org/go.php
Thank you, Mr. Goon, and Mr. Neil Bernardo, for running this event at TriaDCon. We hope you get many players!!!