Modifications. Neither this Agreement nor any provision hereof may be modified, altered, amended or waived except by an instrument in writing duly signed by both parties.

Modifications. Neither this Agreement nor any provision hereof may be modified, altered, amended or waived except by an instrument in writing duly signed by the party to be charged.

Modifications. Neither this Agreement, nor any provision hereof, may be waived, amended or modified except pursuant to an agreement or agreements in writing entered into by the parties hereto.

Amendments. No provision of this Agreement may be waived or amended other than by an instrument in writing signed by both parties hereto.

This Agreement may not be modified or amended except by an instrument in writing signed by the parties hereto.

Waiver and Modification. The provisions of this Agreement may not be waived or modified unless such waiver or modification is in writing and signed by the parties hereto.

Modification. This Agreement shall not be changed or modified, in whole or in part, except by an instrument in writing signed by the parties hereto, or their respective successors or permitted assigns.

Amendments. This Agreement may not be amended, modified or waived as to any particular provision, except by a written instrument executed by the parties hereto.

Modification. This Agreement may not be modified unless such is in writing and signed by both Parties to this Agreement.

Modification. This Agreement shall not be changed, modified, terminated or discharged, in whole or in part, except by an instrument in writing signed by both parties hereto, or their respective successors or permitted assigns.