The Review, Commenting, and Approval building block, part of the Integrated Content Review solution, allows you to inject said functionality or custom Document Services processes at any point in your solutions workflow. You can add functionality or custom processes prior to or after staging, called Pre-stage and Post-stage hooks respectively. See Writing Pre- and Post-Stage Hooks for more information and a quickstart to help you get started.
By Suhas Yogin
September 15, 2011