Sending esc sequences to a printer.

["John Anderson" <jkanders@alpha.delta.edu>]

Hi, 

I have a Panasonic (Epson emulation) Dot-Matrix printer, and the only
way to change the default pitch (i.e. 10 cpi, 12 cpi..) is through DOS
software.  The owner's manual lists all the escape sequences, but how do I
send them to the printer?