Besides specifying parameter Definitions on the command line (cmd:) parameters can be put into a parameter file and then that parameter file can be specified on the command line as "par= parameter_file". This overcomes the problem with the limited length of the command line. It also makes it easier to define complex definitions using characters (eg. "*", ".", "'", """ and "?") that conflict with the shell's command line interpreter.

While "par" files cannot be nested, multiple "par" files can be specified on the command line as:

par= parfile1 parfile2 ...