The document discusses different types of briefs that can be provided to media companies for projects. It describes contractual briefs which require strict adherence to guidelines. Commission briefs involve one media company hiring another to create a product. Negotiated briefs allow parties to discuss and modify the brief. Tender briefs involve companies proposing ideas to a client in a competitive pitch process. Formal briefs provide open outlines for media companies to interpret. Cooperative briefs involve multiple companies working together on a brief. Informal briefs are verbal discussions of project requirements. Competition briefs allow any company to submit entries for a client to judge.