请教翻译article 23.entire agreement and amendment 1.this agreeme

请教翻译
article 23.entire agreement and amendment
1.this agreement proclaims the entire understanding and agreement made between the parties hereto with respect to the subject matter hereof.this agreement also replaces various documents related to the subject matter hereof and incorporates the content thereof.
2.any and all amendments to or revision of this agreement shall be valid only when made in writing and signed by duly authorized representatives of the parties hereto