SFNode [in, out] metadata NULL [X3DMetadataObject]
Metadata are not part of the X3D world and not interpreted by the X3D browser, but they can be accessed via the ECMAScript interface.
SFBool [in] set_boolean
If set_boolean input is true, trigger output time value.
SFTime [out] triggerTime
TriggerTime is output time event, sent when set_boolean input is true.