OrderedGroup { 
  children [
    Shape {
       appearance Appearance {
         material Material2D {
           emissiveColor 1 1 1
         }
       }
       geometry DEF T1 Text {
         string "Press a key"
         fontstyle FontStyle {
           size 20
         }
       }
    }
    InputSensor { 
	url [ "10" ]
	buffer {
	 REPLACE T1.string[0] BY  "Test"
        }
    }
  ]
}
AT 0 {
UPDATE OD [
  ObjectDescriptor {
    objectDescriptorID 10
    esdescr [
      ES_Descriptor {
        es_id 2
	URLstring "keyboard:"
	streamPriority 16
	decConfigDescr DecoderConfigDescriptor {
	  objectTypeIndication 255
	  streamType 9
	  upStream false
	  bufferSizeDB 100000
	  maxBitrate 0
	  avgBitrate 0
	  decSpecificInfo UIConfig {
	    pixelWidth 320
	    pixelHeight 200
	    nodeIDBits 10
	    protoIDBits 10
	    deviceURL "keyboard:"
	  }
	}
       slConfigDescr SLConfigDescriptor {
       }
     }
   ]
  }
] # end UPDATE OD
}