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The Computer Graphics eXchange (CGX) format is a simple binary data
format somewhat similar to GDSII, but designed to be more compact.
Like GDSII, files consist of a sequential list of variable-length
records. It has simplified record structure, but extensions in data
flexibility. If is more compact than GDSII and is more efficient to
read and write.
Computer Graphics Exchange (CGX) Format
The advantages of CGX are smaller files and faster read/write than
GDSII. This format was developed by Whiteley Research Inc., but is
hereby placed in the public domain without restriction.
The file extension is ``.cgx''. Gzipped files (``cgx.gz'') are supported. Xic will automatically identify this
file type, and can read, write, and convert to Xic files just as
Stephen R. Whiteley