mm, I agree, the French system is good - it is at least logical and uniform!

I have a typical business letterhead in front of me at the moment for someone who has just quoted for some printing (!): it has a telephone number grouped XXX YY ZZZZZZ, a fax number grouped XXXX YYY ZZZZ, and a mobile number grouped XXXXX ZZZZZZ. Is this a system, or just an extended joke?