rclick_attributes.opml

Adding type attribute settings to the right-click menu in the OPML Editor
  Author : Kosso : 13 Dec 2005
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1. Go to Tools > Edit Right-Click Menu
  Add the line below by typing or copy/paste
    SET RSS TYPE AND URL
2. Double click this new line - A script outline window should appear
  a] paste in the code below
    local (myXmlUrl)
    op.attributes.getOne ("xmlUrl", @myXmlUrl)
    if dialog.ask ("Enter the RSS feed url:", @myXmlUrl)
      op.attributes.setOne ("xmlUrl", myXmlUrl)
      op.attributes.setOne ("type", "rss")
  b] Hit Run. A dialog should appear asking for the RSS feed url. Hit Cancel
3. Close the Edit Right Click menu
You should now see the option on your right click menu whenever you right click an opml node.
Use this to manage your OPML directory lists of RSS feeds ;)
ps: I have alot more options that this on my menu, for other functions and bespoke attributes I'm playing with, but hopefully this code will get you on your way to opml zen.
OK. Here's another useful bit of code. See if you can add this one yourself ;)
  For a menu item labelled: SORT BY ALPHA
  Add this code
    op.sort()
    That's it! one line! and bingo you have a great way or ordering your lists of feeds alphabetically! Neato! Very useful for lists - keeping them in alphabetic order - all at the click of a mouse - Select the node level you want to order and hey! it's done! Hurrah!
      k.