An information processing apparatus that is capable of displaying, when displaying a large number of contents in a manner divided into a plurality of pages, the contents in a manner such that continuity between each other is maintained, and enables a user to easily recognize the contents located in the vicinity of each page boundary. A unified communications component can enable real-time communications by employing a communication session with at least one data communication mode, wherein the communication session can include conversation identification. Thus, the sealing plug closes the first opening. The seat detaches from the hangers and is at least partially collapsible. A method of using the conveyor diagnostic system is also disclosed.