See load-foreign-library, for the meaning of “library
designator”. This is intended to be the top-level form used
idiomatically after a
define-foreign-library form to go ahead
and load the library.
Finally, on implementations where the regular evaluation rule is
insufficient for foreign library loading, it loads it at the required
See Loading foreign libraries.
 Namely, CMUCL. See
use-foreign-library in libraries.lisp for details.