digit/number: any/non-specific referent; modifies quantifier to indicate that it is not important what the specific members of the referential set are
Note: ro is preferred if you are merely saying that the predicate is true for all referents ("Anyone can do this"), rather than saying something like "Choose any two apples". // (xe'e pa prenu) = "any one person / one non-specific person", (xe'enai pa prenu) = "one specific person". See itca, steci, su'anai, su'ero, te'i'o