(2)When arranging papers for record each sheet shall be paged on the front only, i.e., only old pages will be numbered and the whole bound in a case file cover (Form No. XV-68). All entries regarding previous and subsequent references shall be made in the spaces provided for the purpose on the front of the case file cover. If any paper is subsequently removed from a case file a slip showing what has become of the paper shall be inserted in its place.