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Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 32,039
Mac Specs: 21.5" iMac 2.5 GHz i5, iPad 3rd Gen., 3 iPods
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04-16-2012, 09:08 PM
It was probably locked by its author. Whenever a PDF is created (using Adobe or other creation software) there is an option to lock the document so that others can not make changes to it. Very common procedure especially with copyrighted documents, graphics, etc.
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QUOTE
Thanks
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