mirroring and scaling once again

I've read "The NIST RS274NGC Interpreter - Version 3" and "EMC Hanbook"
(it's possible that not to carefull) and I have found nothing about mirror &
scaling capabilities.

Am I blind? :>

O.K. Seriously: I'm going to retrofit miling machine in our shop. We use it
for milling footwear forms. And it's important to me to have these
capabilities.

Regards
mariusz