Protection policy

Administrators can protect pages to restrict editing.
 * Full protection disables editing for everyone except administrators. Fully protected images cannot be overwritten by new uploads.
 * Semi-protection disables editing from anonymous users and registered accounts less than four days old.
 * Move protection protects the page solely from moves. Fully protected pages are move-protected as well, by default.
 * Cascading protection fully protects any page transcluded onto the protected page.