It means: request for changes
Royal Fire Connecting States Luv Ya xx
RFCs are documents that detail protocols, standards, and information that define the internet.
The initials SWL mean Safe Working Load
These are the designers initials.
An advantage of the collaborative effort of RFCs is better security measures. This is due to the ability to designate a user and password or creating destinations with same user privileges.
Millimolar
KC is the initials of his FaceBook account, apparently.
If you mean the international car registration then it is Switzerland
tgat
Initials of the maker.
Makers initials
If you mean initials, then they are HI.