Printronix MVP Series - Manual (Page 150)

Programming 7–26
10H–1FH — Electronic Vertical Format Unit Codes
Refer to the EVFU chapter for programming information on the Electronic
Vertical Format Unit (EVFU).
20H — Space
The printer will leave a blank space where a space character appears (in each
character position) in a character line. Do not fill the end of a character line
with spaces unless you configure Configuration Option 22 to insert
automatic line feeds in the data stream after a particular number of
characters. When underlining (Figure 7–3), specify space characters in those
positions not to be underlined.