The document discusses different types of briefs that can be used when commissioning media projects from clients. A contractual brief defines the work, liabilities, and payment terms between a client and employees. A negotiated brief can be changed to suit all parties' needs through negotiation. A formal brief outlines the project requirements but may not be legally binding. An informal brief is just a verbal discussion of requirements. A commission brief involves one company hiring another to create a product. In a tender brief, companies propose projects and the client chooses. A co-operative brief involves multiple companies working together on a project. A competition brief allows companies to compete to complete the best project.