HP LaserJet 4050 Printer series - Manual (Page 235)

EN
Printer Commands D-3
Combining Escape Sequences
Escape sequences may be combined into one escape sequence
string. There are three important rules to follow when combining
code:
1 The first two characters after the ? character (the
parameterized and group characters, see Figure D-1) must be
the same in all of the commands to be combined.
2 When combining escape sequences, change the uppercase
(termination) character in each individual escape sequence to
lower case.
3 The final character of the combined escape sequence must be
uppercase.
The following is an example of an escape sequence string that
would be sent to the printer to select legal paper, landscape
orientation, and 8 lines per inch:
?&l3A?&l1O?&l8D
The following escape sequence sends the same printer commands
by combining them into a shorter sequence:
?&l3a1o8D