selectboolSyntax.select : termConstant denoting Hilbert’s choice operator.
The ML variable boolSyntax.select is bound to the term
min$@.
boolSyntax.equality, boolSyntax.implication,
boolSyntax.T, boolSyntax.F, boolSyntax.universal,
boolSyntax.existential,
boolSyntax.exists1,
boolSyntax.conjunction,
boolSyntax.disjunction,
boolSyntax.negation,
boolSyntax.conditional,
boolSyntax.bool_case,
boolSyntax.let_tm, boolSyntax.arb