NavigationInfo { 
      eventIn      SFBool   set_bind
      exposedField MFFloat  avatarSize      [0.25, 1.6, 0.75] # [0,)
      exposedField SFBool   headlight       TRUE
      exposedField SFFloat  speed           1.0               # [0,)
      exposedField MFString type            ["WALK", "ANY"]
      exposedField SFFloat  visibilityLimit 0.0               # [0,)
      eventOut     SFBool   isBound
    }