This addendum makes several miscellaneous changes to the current standard: (1) it clarifies the requirements for an AII room, regarding a potential anteroom and the potential use of the AII room for patients other than those the room was designed for; (2) it clarifies the requirements for a PE room, regarding a potential anteroom; and (3) it adds design requirements for a combination AII/PE space that has been previously defined by the FGI Guidelines.