View Single Post
Originally Posted by AlanY
I think James misread your question. (And his advice doesn't make sense anyway, since OPML does not support columns.)
I did misunderstand the question. Alan's advice about the placement of attachments is correct.

OPML's support for columns is up for debate. OPML is so loosely defined that you can (ab)use the arbitrary addition of item attributes to add item metadata. This is what OmniOutliner and several other outliner do. The main problem is with notes. We encode our notes using the "_notes" attribute where other outliners use a different name.

Until we get a real XML outline specification this is the best we can do. I thought OML[1] was going to take off but it really hasn't. XOXO[2] seems to have some traction but doesn't do columns elegantly.