The Ports tab displays a list of the current port service mappings, and lets you enable or disable UPnP port forwarding. To enable or disable UPnP port forwarding: Set UPnP port forwarding to ON to allow UPnP devices on your Fiber network to set their own port forwarding rules.
VRML (Virtual Reality Modeling Language) is a language for describing three-dimensional (3-D) image sequences and possible user interactions to go with them.
Vapor control systems consisting of a vacuum vapor collection system, vapor recovery unit (VRU), and vapor combustion unit (VCU); includes vapor recovery connections in each bay, vapor collection header, and knock-out drum run to a VCU/VRU combination for emissions control.