parameters: (handler)
docstring: Install application-specific HDF5 image handler.
  
      :param handler: Handler object.
docstring_summary: Install application-specific HDF5 image handler.
docstring_tokens: Install application - specific HDF5 image handler .
function: def register_handler(handler):
      """
      Install application-specific HDF5 image handler.
  
      :param handler: Handler object.
      """
      global _handler
      _handler = handler
function_tokens: def register_handler ( handler ) : global _handler _handler = handler