The following syntactic bindings are exported by the library
(vicare expander).
Type name of objects representing the type of lambda formals.
Build and return a new instance of <type-signature>. The argument
specs must be a proper or improper list of
<object-type-spec> instances representing the signatures of lambda
formals.
Return #t if obj is an instance of <type-signature>;
otherwise return #f.
Return a proper or improper list of <object-type-spec> instances
representing the signatures of lambda formals.