computeAvgTotCost	computeAvgTotCost
expandYearlyCosts	expandYearlyCosts
getInvaCostVersion	getInvaCostVersion
invacost	invacost
modelCosts	modelCosts
plot.invacost.costmodel	plot.invacost.costmodel
plot.invacost.costsummary	plot.invacost.costsummary
prettySummary	prettySummary
summarizeCosts	summarizeCosts
