is#procedure_call_interface
  supertype:  non-graphical_user_interface
  subtype:  network-accessible_procedure_call_interface
     subtype:  RPC_interface__Remote_Procedure_Call_interface__remoteprocedurecallinterface
  subtype:  API__application_programming_interface__applicationprogramminginterface

No statement uses or specializes procedure_call_interface; click here to add one.