This Guaranty Agreement, each Joinder Agreement and the terms, covenants and conditions hereof and thereof, shall be binding upon and inure to the benefit of the parties hereto and thereto, and to their respective heirs, legal representatives, successors and assigns; provided , however , that no Guarantor shall be permitted to assign any of its rights, powers, duties or obligations under this Guaranty Agreement, any Joinder Agreement or any other interest herein or therein except as expressly permitted herein or in the Revolving Credit Agreement.  Without limiting the generality of the foregoing sentence of this Section 18 , any Lender may assign to one or more Persons, or grant to one or more Persons participations in or to, all or any part of its rights and obligations under the Revolving Credit Agreement (to the extent permitted by the Revolving Credit Agreement); and to the extent of any such permitted assignment or participation such other Person shall, to the fullest extent permitted by law, thereupon become vested with all the benefits in respect thereof granted to such Lender herein or otherwise, subject however, to the provisions of the Revolving Credit Agreement, including Article IX thereof (concerning the Administrative Agent) and Section 10.06 thereof concerning assignments and participations.  All references herein to the Administrative Agent shall include any successor thereof.