This keyword takes a list of packages to be retained. All packages in the list are kept in the delivered image, regardless of the values of the :smash-packages and :delete-packages keywords.
, then the two variables above are set to
. See also Coping with intern and find-symbol at runtime.
Other keywords push packages onto the
When you keep a package by
, this does not cause that package's symbols to be kept. To retain symbols, see Ensuring that symbols are kept.
LispWorks Delivery User Guide - 13 Dec 2011