| 
	    plexit
	  ( | message ); | 
      This routine is called in case an error is encountered during
      execution of a PLplot routine.  It prints the error message, tries to
      release allocated resources, calls the handler provided by plsexit
      and then exits.  If cleanup needs to be done in the driver program
      then the user may want to supply his/her own exit handler and pass it
      in via plsexit.  This function should either call plend before
      exiting, or simply return.
    
message
	  (PLCHAR_VECTORError message.
This function is not used in any of our C examples.