           coordinate: x=$30,y=$31
           Pic: $32
           coordinate: x=$33,y=$34
-      Pic(sr_strat=true): $35
+      Pic(sr_start=true): $35
       Pic(sr_end=true): $36
     """
   'AIXVideoPlay':

      QuestionPart:
      Video: $4
    """

  'AIXA2PFree':
    'prefix':'aixa2pfree'
    'body':"""
      [TYPE AIXA2PFree]
      Video(stream=true): $1 
      Video(stream=true): $2
      Video(stream=true): $3
