# Subparameter o

You can specify a parameter file by giving the subparameter o.
This subparameter should be put at the end of the subparameters of -dviprt:`l.
You can specify a file created by optcfg.exe.
dviprt will refer a parameter file after usual initialization of the printer. After reading the parameter file, dviprt sends commands specified in the parameter file. Therefore, even if you specify other parameters of dviout, for example, -y: for paper selection, these specification might be ignored and the values in the parameter file will be used.