Kevin,
I have used two products succesfully.
1.  CAM350 from ACT @ 408-358-4680.  They have a viewer called GerberView 
II.
2. GCCAM from Graphicode @  206-672-1980.  They also have a viewer called 
GCVue.

They both support RS-274-X with support for G36 and G37 polygon fill.  They 
both also run under Windows and Unix.

I am curious to know what Design product you use to output X data with 
G36/G37 and the version number.

George Murray
Gerber Systems Corporation
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 ----------
From: DesignerCouncil-request
To: DesignerCouncil
Cc: kevin.seaman
Subject: RS-724-X Gerber Viewers
Date: Tuesday, March 26, 1996 3:55PM

PC Designers,

HOWZITGOIN?

What software do you use to view RS-274-X gerber files?

Does it support G36/G37 polygon fill?

Does it run under UNIX or Windows-Etc?

Thank you and have a FANTASTIC day!

Kevin L. Seaman
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(714) 221-4752