OPML (Outline Processor Markup Language)

Dave Winer is proposing a new XML format to describe outlines. From http://www.opml.org/spec2 :

The purpose of this format is to provide a way to exchange information between outliners and Internet services that can be browsed or controlled through an outliner.
OPML is also the file format for an outliner application, which is why OPML files may contain information about the size, position and expansion state of the window the outline is displayed in.
OPML has also become popular as a format for exchanging subscription lists between feed readers and aggregators.

David Berlind posted a related article: "Winer on wikis: Just add OPML" on ZDNet.com, http://blogs.zdnet.com/BTL/?p=2750&tag=nl.e539

Here is an example XML file:

<?xml version="1.0" encoding="ISO-8859-1"?>
<opml version="2.0">
 <head>
  <title>workspace.userlandsamples.doSomeUpstreaming</title>
  <dateCreated>Mon, 11 Feb 2002 22:48:02 GMT</dateCreated>
  <dateModified>Sun, 30 Oct 2005 03:30:17 GMT</dateModified>
  <ownerName>Dave Winer</ownerName>
  <ownerEmail>dwiner@yahoo.com</ownerEmail>
  <expansionState>1, 2, 4</expansionState>
  <vertScrollState>1</vertScrollState>
  <windowTop>74</windowTop>
  <windowLeft>41</windowLeft>
  <windowBottom>314</windowBottom>
  <windowRight>475</windowRight>
  </head>
 <body>
  <outline text="Changes" isComment="true">
   <outline text="1/3/02; 4:54:25 PM by DW">
    <outline text="Change &quot;playlist&quot; to &quot;radio&quot;."/>
    </outline>
   <outline text="2/12/01; 1:49:33 PM by DW" isComment="true">
    <outline text="Test upstreaming by sprinkling a few files in a nice new test folder."/>
    </outline>
   </outline>
  <outline text="on writetestfile (f, size)">
   <outline text="file.surefilepath (f)" isBreakpoint="true"/>
   <outline text="file.writewholefile (f, string.filledstring (&quot;x&quot;, size))"/>
   </outline>
  <outline text="local (folder = user.radio.prefs.wwwfolder + &quot;test\\largefiles\\&quot;)"/>
  <outline text="for ch = 'a' to 'z'">
   <outline text="writetestfile (folder + ch + &quot;.html&quot;, random (1000, 16000))"/>
   </outline>
  </body>
 </opml>

-- Contributors: PeterThoeny

Discussion

OPML can get relevant for TWiki, it depending if this format is gaining popularity. OPML is about structure, and TWiki is a StructuredWiki.

-- PeterThoeny - 23 Mar 2006

BasicForm
TopicClassification	DefineTerm
TopicSummary
InterestedParties
RelatedTopics

Topic revision: r1 - 2006-03-23 - PeterThoeny

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