The rule key and configkey attributes are strings and therefore it is not necessary to use numbers for it. I used the numbers for PCLint because it is defined this way in http://www.gimpel.com/html/pub90/msg.txt.

For the MISRA 2004 rules the notation dd.dd and for MICSRA C++ 2008 dd-dd-dd is also fine.
Did you see the attachment from my former e-mail - sorry I did not use github to pulish it.

I feel using offset for this rules shall be avoided.