ISSUER SHALL HAVE NO DUTY TO EXERCISE ANY RIGHT HEREUNDER OR WITH RESPECT TO ANY PROPERTY, AND ISSUER SHALL NOT BE LIABLE FOR ANY FAILURE TO DO SO OR DELAY IN DOING SO. NONE OF ISSUER'S OPTIONS, POWERS OR RIGHTS IN CONNECTION WITH THE CREDIT OR THIS AGREEMENT SHALL BE WAIVED UNLESS ISSUER OR ISSUER'S AUTHORIZED AGENT SHALL HAVE SIGNED SUCH WAIVER IN WRITING. NO SUCH WAIVER, UNLESS EXPRESSLY AS STATED THEREIN, SHALL BE EFFECTIVE AS TO ANY TRANSACTION WHICH OCCURS SUBSEQUENT TO THE DATE OF SUCH WAIVER NOR AS TO ANY CONTINUANCE OF A BREACH AFTER SUCH WAIVER. NO COURSE OF DEALING BETWEEN ANY OF THE ACCOUNT PARTIES AND ISSUER SHALL BE EFFECTIVE TO CHANGE MODIFY OR DISCHARGE IN WHOLE OR IN PART THIS AGREEMENT OR THE OBLIGATIONS HEREUNDER.