Adding comments in Adobe reader 8.0

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i cannot add comments document have created myself. have adobe reader 8.0 (not sure how check if have more recent versions). in document properties window, security tab says commenting 'not allowed'. created document myself using pdf printer installed on computer. have checked printer's preference settings , 'advance printing features' 'enabled'. according reader should needed in order add comments.

thanks

in order enable pdf commenting in reader, must use acrobat pro.


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