Printronix ProLine 5 Series Manual page 118

Overstrike
When overstrike is enabled, common dots appear darker in characters that are
printed over each other, as shown below. The print position moves one–half dot
to the right. If you are using overstrike for bolding and if overstrike is disabled, no
bolding will occur. Overstrike printing occurs at a Decreased speed.
Define LF Code
This option determines whether an automatic carriage return should occur
whenever a line feed command is received.
LF = LF does not perform an automatic carriage return. The next print
position will be the current print position of the next line.
LF = CR + LF forces an automatic carriage return with each line feed
command. The next print position is position 1 of the next line.
Select SFCC
This parameter allows you to select which ASCII codes will function as the
Special Function Control Character (SFCC) command delimiter. P–Series codes
can use 0–127 (hex 00 through hex 7F). Options include the following:
ESC (1B hex)
SOH (01 hex)
ETX (03 hex)
CIRCUMFLEX (5E hex) –– also called carat (^)
TILDE (7E hex) –– (~)
NOTE: SOH, ETX and ESC are non–printables. The characters (^) and (~)
are printable; however, do not use them as printables in the host
data stream if either is chosen as a delimiter, or print errors will
occur.
Configuration Menus 4–65