PWML, Print Wizard Markup Language, can be added to the beginning of any file directly in the data stream or by specifying a PWML print "init" file. Print "init" files can be specified in a print profile file as well, or can be referenced on the command-line for the Print Wizard engine to use:
C:\Program files\Printwiz30\printwiz.exe /vinit=myinit.txt myfiletoprint