Ricoh 850 - Manual (Page 215)

Background Numbering
167
2
C
To change the entered number, press the [Change] key. If you do not wish
to, go to step
E.
D
Enter the number to start counting from with the number keys. Then press
the
[#] key.
Note
❒ To change the entered number, press the { Clear } key on the control panel
or press the [Clear] key on the display panel then enter the new number.
E
Set your originals and press the { Start } key.