1. Can a package use itself? Or is this "an error"?
2. Does the :use argument to in-package default to the list of the
lisp package in the same way that it does for make-package? In
other words, if you do (in-package 'foo) and package foo does not
yet exist, does it default to using the lisp package? What if
package foo does exist but doesn't already use the lisp package?
-Sandra
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