How to use commitment control in SYNON?

Commitment control can be implemented by specifying our option in function options. There are three options available viz.

1. MASTER - By choosing this option the program will run under commitment control. This program will contain appropriate commit points which will be defined in the SYNON supplied program Y2BGCTL

2. SLAVE - The program will run under commitment control. No automatic start or commit points are included. Commit points can be added using commit built-in function

3. NONE - The program does not run under commitment control. Hence, there are no commit points.

Note: Physical files running under commitment control must be journalized

Hi. I want to know more in detail about master slave concept in commitment control?
Could you please explain with an example? Thanks in Advance..