This article will look at the five W's (Who, What, Where, When, and Why although slightly out of order) of the tender letter. The CPO has authority over state agency procurement Authorized to provide leadership on procurement issues, the CPO may ana.The complete terms and conditions of the tender offer are contained in the Offer to Purchase included in the tender offer statement filed with the SEC. The controversy over what is included in the letter is still a major industry concern. The tender cover letter is an important yet underused tool. GAO provides fact-based, nonpartisan information to Congress. Often called the "congressional watchdog," GAO investigates federal spending and performance.