The document provides an overview of a Software Requirement Specification (SRS) including its definition, purpose, typical contents, and an example SRS for a virtual classroom system. An SRS is used to describe the behavior and requirements of a software system, including functional and non-functional needs. It is intended for development teams, maintenance teams, clients, and technical writers. Key sections include the purpose and scope of the system, introduction/existing vs proposed systems, advantages, and functional and non-functional requirements. The example SRS presented is for a virtual classroom system.