At entry to the standard-format exits (those whose names end in R), register 1 points to the standard exit parameter list. For more information about the parameter list, see TSO/E standard exit parameter list. Note that the TRANSMIT and RECEIVE exits do not use the new command buffer field in the parameter entry pointed to at offset +4.

The parameter entries pointed to from offset +36 (decimal) to the end of the parameter list, contain exit-dependent data. The exit-dependent data is described separately for each exit, beginning with Parameter descriptions for INMXZ01R.