Re: Is substrate thickness specified in the Gerber file?

My software (Eagle from Cadsoft)
lets me specify substrate thickness in the design rules.
However, I can't find any trace of the this info
in the produced Gerber files.
Is substrate thickness supposed to be in the gerbers,
or supplied separately?
Pavel (interpasha @ hotmail.com)

A previous, related thread:
http://groups.google.com/group/sci.electronics.cad/browse_frm/thread/61e4ae2e59063e59/25d5cc06ff6cbc44?q=alternatezone+dimensions+*-*-*-*-readme.txt-file-with-your-gerbers+zz-zz+qq+alignment+Fabrication-Information+Warp-*-twist+checklist
..
..
FYI, Google Groups has made their Reply frame ~15% too wide.
They let you continue to type on a line all the way over,
but when they post it, they break that line
by inserting a carriage return after ~72 characters.

Your submission may thus look choppier than you expected.

.