.br
\fI*\fR means match any version of the package so long as the specified base
is matched. So with a version of '2*', we can match '2.1', '2.2', '2.2.1',
-etc... and not match version '1.0', '3.0', '4.1', etc...
+etc... and not match version '1.0', '3.0', '4.1', etc... The version part
+that comes before the '*' must be a valid version in the absence of the '*'.
+For example, '2' is a valid version and '2.' is not. Therefore, '2*' is
+allowed and '2.*' is not.
.br
\fI~\fR means match any revision of the base version specified. So in the
above example, we would match versions '1.0.2a', '1.0.2a\-r1', '1.0.2a\-r2',