installs the module, which means making its code available to be used in Lisp, as if register-module was called with the original module.
must be called at run time, normally during the initialization of the application.
does not persist after
can be called repeatedly with the same name. The subsequent calls in the same invocation of the application do not have any effect.
does not return a useful value.
LispWorks Foreign Language Interface User Guide and Reference Manual - 7 Dec 2011