Isopalavial interface was a gibberish term that Commander William Riker invented to confuse Morta when he was forced to instruct the Ferengi in the operations of the main computer of a Galaxy-class starship in 2369. Commander Riker said that this system controls the main firomactal drive unit. Inexperience with this interface could blow up the entire firomactal drive. (TNG: "Rascals" )