From the epson support page
(http:/www.epson.com/support/faqs/impact/faqdfx5p.txt)
Some commonly used escape codes include (in decimal values) -
Reset (27, 64); Set page length in lines (27, 67, n - where n is a
number from 1 to 127); Carriage return (13); Line feed (10); Form
feed (12); Select 1/8-inch line spacing (27, 48); 10 cpi (27, 80);
12 cpi (27, 77); Select bold font (27, 69); Cancel bold font (27,
70); Select italic font (27, 52); Cancel italic font (27, 53); Turn
underline on/off (27, 45, n - where n equals 49=ON or 48=OFF);
Select condensed print (15); Cancel condensed print (18). For more
escape codes, please refer to the Command Summary of your User's
Manual. If you need to use advanced escape codes for programming
purposes, you can purchase an ESC/P Reference Manual from EPSONAccessories.
Carol Choate
Progress DBA/Programmer
Peg Member #1998062202