GRC 5.3: Mass role import in ERM

Dear Guys,

Please help me to understand the concept of Mass role import in GRC 5.3 ERM with program in Backend : /VIRSA/RE_DNLDROLES

What does Role info file and Role org file signifies and what are the contents inside those files.

Please check the attached screenshot for the program : /VIRSA/RE_DNLDROLES

Thanks in Advance....