<nowiki>OPML; OPML; OPML; OPML; أو بي إم إل; OPML; OPML; Outline Processor Markup Language; Outline Processor Markup Language; Outline Processor Markup Language; OPML; OPML; OPML; OPML; OPML; OPML; OPML; OPML; اوپیامال; OPML; OPML; Outline Processor Markup Language; OPML; OPML; OPML; OPML; OPML; OPML; OPML; Outline Processor Markup Language; ئۆپمل; format XML per a esquemes estructurats; Dateiformat; an XML format for structured outlines; format de fichier informatique XML permettant de regrouper et d'identifier les titres d'un texte; bestandsformaat; OPML; Outline Processior Markup Language; OPML; OPLM; Outline Processor Markup Language; OPML; OPML; Outline Processor Markup Language; OPML File 2; OPML; اوپی ام ال; او پی ام ال; OPML; OPML</nowiki>
OPML (Outline Processor Markup Language) is an XML format for outlines. Originally developed by UserLand as a native file format for the outliner application in its Radio UserLand product, it has since been adopted for other uses, the most common being to exchange lists of web feeds between web feed aggregators.
