What is MRP?

Aug 31, 2014 at 8:44 AM
Edited Aug 31, 2014 at 8:58 AM
What is MRP?
Waht is Bill by Bill?

I try to find it in documentation but there is nothing about MRP.
Can anyone tell me what for what are these?
Sep 23, 2014 at 10:13 AM
Please Explain it. Thanks.