* when perm and noperm are in the same line (item), noperm is preferential,
* when they are in different lines (items), the latter is preferential,
* '*' nid is as default perm, and is not preferential.*/</screen>
* when perm and noperm are in the same line (item), noperm is preferential,
* when they are in different lines (items), the latter is preferential,
* '*' nid is as default perm, and is not preferential.*/</screen>