+GNU packages need not be FSF-copyrighted; this is up to the author(s),
+generally at the time the package is dubbed GNU. When copyright is
+assigned to the FSF, the FSF can act to stop GPL violations about the
+package. Otherwise, legal actions are up to the author(s). The rest
+of this section is about the case when a package is FSF-copyrighted.
+
+@emph{Before} incorporating significant changes, make sure that the