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Outline Processor Markup Language

Vangie Beal
Updated on:
Outline Processor Markup Language (OPML) is an XML-based format that allows exchange of outline-structured information between applications running on different operating systems and environments. The purpose of this format is to provide a way to exchange information between outliners (programs that allow you to read, edit and reorganize outlines) and Internet services that can be browsed or controlled through an outliner.

Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

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