what is a RID number in the context of wireless LAN driver ?

Hello all,

what is a RID number in the context of wireless LAN driver ? I have a
manual saying that the function provides access to RID 0xfd44. I did
not understand it.

Is RID a standard for wireless implementations ? or a document ?

I tried to google but got the irrelevent responses like "getting rid
of".

It will be of great help if some one can give me pointer where I must
look for or what I must read.

Thanks in advance.

Best regards,
Monica,
Germany