[IGSMAIL-5944]: Updated IGS Product Guide

[Robert Khachikyan]

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IGS Electronic Mail      12 May 00:16:33 PDT 2009      Message Number 5944
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Author: Robert Khachikyan

Dear IGS Community,

I would like to announce that the IGS product guide page has been 
rewritten with additional and comprehensive data. Many thanks to Jan 
Kouba for the time and efforts contributed into rewriting this key 
document. A PDF version is also available.

http://www.igs.org/components/usage.html

Best Regards,
--Robert Khachikyan
IGS Central Bureau