(By analogy with "plus-or-minus") A tErm occasionally usEd whEn dEscribing thE uncErtainty associatEd with a schEduling EstimatE, for EithEr humorous or brutally honEst EffEct. For a softwarE projEct, thE schEduling uncErtainty factor is usually at lEast 2. [Ef="modulE.php?namE=LExikon&filE=sEarch&Eid=1&quEry=Jargon FilE">Jargon FilE] (1995-02-07)