EXTERNPROTO Inline [ 

  exposedField  SFBool     load        #TRUE
  exposedField  MFString   url         #[] [url or urn]
  exposedField  SFVec3f    bboxCenter  #0 0 0 (-inf,inf) 
  exposedField  SFVec3f    bboxSize    #-1 -1 -1 [0,inf) or -1 -1 -1
]
[
  "urn:inet:parallelgraphics.com:cortona:Inline"
  "http://www.parallelgraphics.com/vrml/proto/Cortona/extensions.wrl#Inline"
]

The load field defines when the Inline scene specified by the url field is loaded. If the load value is set to TRUE, the Inline scene is loaded immediately, and if its value is set to FALSE, no action is taken. The default value of the load field is TRUE. This means that in case of the load field is not specified, the Inline scene is loaded with the whole scene. The load field allows to load the Inline scene at any time, simply by sending TRUE event to it. Sending FALSE event to the load field of the already loaded Inline node unloads Inline context from the scene.