I know, I used to do this with ESC (escape) codes when I knew I was printing to a HP LJ III but Itossed that LJ III code book away a long time ago along with Clipper and blinker.
Still if using an HP printer, it should respond to the embedded Escape codes which are not printable characters.
If I find the book. I'll post
Ron Seidl
Independent Developer
VFP
"I'm playing in life's theater in anticipation of a great cast party!"