Could you help me? (GX Deverlop Software and Misubishi PLC)

[ttvb]

Did anyone use GX Deverlop Software to programming for Misubishi PLC ? could you help me to explain this:
When I printed Ledder Program fully to paper there was a line that contained some comment is putted next to every ledder program lines. And I still can't understand? example: C1 A/S 457 B/D 4 could you help me to show its?(A/S 457 ? B/D 4 ?)

 

[Imi'ike]

Contact user

From the Print window, select the "Ladder" tab. There is an option labeled "Contact user". If you clear the check mark box for this option, the A/S and B/D will not be printed to the side (or bottom) of your ladder.

Section 14.5.2 of the GX Developer Operating Manual (ib0800243ed.pdf) briefly shows the A/S and B/D. In short, the A/S indicates steps the contact is used as a Source and B/D indicates the steps the contact is used at a Destination.