A person support apparatus with an extendable mattress, a night light message display system, a screen key pendant, egress handle siderails, and various other features. The extendable mattress includes hinged extensions along the sides of the extendable mattress that are moved from a nested position to the extension position. The screen key pendant includes a plurality of screen keys that can be pressed to cycle through various control modes for the person support apparatus. The night light message display system can be configured to display a message or image on the floor communicating information to the person and/or alerting the person as to when they are able to exit the bed.