A method and apparatus for environmental occupant monitoring and hazard notification and mitigation monitors occupants in a spatial environment, sending notifications to third parties upon detection of hazardous conditions and executing safety protocols in using environmental control systems to mitigate the hazard. A front face of each ornamental link has at least one raised section located in the same region of the width of the ornamental link as said inside surface where the hinge or the metal link rests, this raised section being arranged to abut against the opposite front face of the adjacent ornamental link when the hinge is in said folded position. When the design is subsequently analyzed using those verification rules in another verification rule check process, the waiver geometric elements are examined, and used to mask those errors associated with a waiver geometric element that would otherwise be displayed to the designer. The lighting module which is connected with the controlling device receives initial address data and lighting orientation data from the controlling device. The present invention further provides a system and a Proxy node for streaming media data distribution, thereby expanding an application range of liveon-demand service of a user, and increasing the flexibility of a system for streaming media distribution.