leaps	all-subsets regressiom
leaps.backward	Internal functions for leaps(), subsets()
leaps.exhaustive	Internal functions for leaps(), subsets()
leaps.forward	Internal functions for leaps(), subsets()
leaps.seqrep	Internal functions for leaps(), subsets()
leaps.setup	Internal functions for leaps(), subsets()
plot.regsubsets	Graphical table of best subsets
regsubsets	functions for model selection
summary.regsubsets	functions for model selection
