Epson C82315 - Manual (Page 17)

You may insert one or several commands, as long as they are all in hexadecimal
format, and they are commands that are used by your printer in its current mode.
You may also insert spaces between hexadecimal pairs to increase visual clarity;
however, do not put any’spaces after the first &% characters or before the last
&% characters.
4. After you have inserted all your commands, insert the &% characters again.
This tells the interface that command-pass-thru Is finished and the data following
is normal print data.
Note:
Although these characters are displayed in your document on the display
screen, the interface treats them as commands and does not print them.
If part of the sequence is printed, you have made an error in entering the
codes; check your document and make sure you are using the correct
format and hexadecimal characters.
Avoid sending codes that would move the print position during
command-pass-thru. Since the interface does not process these
commands, it cannot keep track of the print position changes; this may
affect the position of following characters and page layout.
You can also send these commands by typing them on the screen and
pressing the screen print key.
Example:
To print the word ‘scalable” in the following sentence in bold using
Epson ESC/P commands, you could use command-pass-thru as follows
(the bold on/bold off commands are ESC E and ESC F):
Epson ESC/P 2 offers advanced &% 1B 45&%scalable&%1B46&% fonts
for laser-like printing at dot-matrix prices.
USER-DEFINED COMMAND-PASS-THRU STRINGS
You can define up to eight of your own custom command-pass-thru command
strings (0 to 7) to be stored in interface memory. The method of defining strings
is described in the following section.
Once you have defined these strings, you send them in the following format:
&%U1
The U1 tells the interface to send user-defined string number 1 to the printer.
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