@code{let-optional*} binds them sequentially, consistent with @code{let}
and @code{let*} (@pxref{Local Bindings}).
-@deffn {libary syntax} let-optional rest-arg (binding @dots{}) expr @dots{}
+@deffn {library syntax} let-optional rest-arg (binding @dots{}) expr @dots{}
@deffnx {library syntax} let-optional* rest-arg (binding @dots{}) expr @dots{}
These two macros give you an optional argument interface that is very
@dfn{Schemey} and introduces no fancy syntax. They are compatible with