This document provides information about model sheets and clean-up requirements for animation. It defines model sheets and lists their objectives. It describes clean-up as part of the animation workflow and lists different types of model sheets like character model, mouth charts, action breakdown, and turnarounds. It provides details on requirements for clean-up drawings and examples of different types of model sheets like general line model sheet, rough concept sheet, anatomical study, rough construction, rough model, rough dialogue, and final line construction and turnaround model sheets.