Compuprint MDP40B Programmer Manual - Manual (Page 200)

C-58
ESC r
Answer to book operator command. (Olivetti PR2, PR40+, 2845)
ASCII Code ESC r x
Hexadecimal Value 1B 72 n
Decimal Value 27 114 n
The answer to the book operator command may be determined by the pressing of a key
(if manual O.B.) or the presence of the document in the slot (if automatic O.B.).
If automatic O.B. is enabled, the answer will always be Station 1.
The bits of parameter x may have the following meanings:
Byte x:
bit 8: = 0 fixed
bit 7: = 0 fixed
bit 6: = 1 fixed
bit 5: = 0 fixed
bit 4: = 0 fixed
bit 3: = 1 Document present
bit 2: = 1 Station 2 pressed
bit 1: = 1 Station 1 pressed