"bridging the gap between print and internet publishing, adobe's portable document format (pdf) lets publishers distribute their articles, newsletters, and documentation online without worrying about formatting problems or unauthorized alterations. by giving away the acrobat reader early on, adobe helped create a nearly unassailable market position. if you want to read magazine archives or software manuals online, you need acrobat reader--as its nearly seven-year occupation of the most popular list can attest."
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