Q:

SAS data storage - /*file_location*/ notation

I'm new to SAS and am trying to understand how a specific SAS program is reading data from files: 
At this point I understand that libnames tell SAS where to store and retrieve data, but I've also come across this notation at the top of the file I am studying: 
%read_configuration_file(dataIn = /*rpe_para.*/configuration_file); 

read_configuration_file is a macro my program runs. What I'm really confused about is the dataIn file location. Can somebody explain the notation to me?

A:

/* anything */ is a comment in SAS.  The DATAIN parameter has the LIBNAME part commented-out.  

