gEDA-user: 274x Gerber Files

[Ryan Seal]

I am getting ready to send my files out for fabrication and have a few 
questions:

1. The soldermask for both sides of the board appear to be a negative 
image while everything else is positive - is this correct?

2. My boss uses Orcad and his inner layers are negative while the 
soldermask is positive - is there a standard?

3. I have seen some users who place a text description containing the 
file name and image orientation above the board outline for each layer? 
Is this necessary and could you do this using gEDA?

I am going to order some no-touch boards from protoexpress and I could 
just imagine no-touch meaning: "we sprayed all your pads with resist 
because you stated the soldermask image was positive - best wishes". 
Anyone ever experience any problems from fab houses over this sort of thing?

Thanks,
Ryan