More provisions specific to euro members

I really can't get my head round this one. This is an amendment to Article III-88 (1), which reads as follows:

In order to ensure the proper functioning of economic and monetary union, and in accordance with the relevant provisions of the Constitution, the Council shall, in accordance with the relevant procedure from among those referred to in Articles III-71 and III-76, with the exception of the procedure set out in paragraph 13 thereof, adopt measures specific to those Member States whose currency is the euro.

If you can make sense out of this, you need to lie down. No wonder Blair looked ill when he came out of the summit.