A key in ProbabilityDistribution objects and an option for discreteProbabilityDistribution and continuousProbabilityDistribution for setting the quantile function to be used by quantile.
The object QuantileFunction is a symbol.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Probability.m2:581:0.