Printronix t8000 Administrator's Manual page 168

This option defines the printer action when print data is received past the
forms width setting.
Disable
Enable
Factory Default
Application > Serial Matrix Setup > Define LF Code
This option controls the action of the printer when it receives a Line Feed
code (0A hex) from the host computer. If this feature is enabled, each time
the printer receives a line feed, it inserts an additional carriage return code
(0D hex) into the data stream. Do not use this feature if the host computer
sends carriage returns to the printer.
LF = LF
LF = CR + LF
Factory Default
168
Application > Serial Matrix Setup > Auto LF
Discards any data past the forms width.
Performs an automatic carriage return and line feed
when data is received past the forms width.
Disable
Does not insert a carriage return before each line feed.
The next print position will be the current print position
of the next line.
Inserts an extra carriage return before each line feed.
The next print position will be print position 1 of the
next line.
LF = CR + LF