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