The 2.x version of activeRenderer includes an updated RSS renderer for displaying or publishing news feeds as outlines. The renderer displays a list of any topics found inside a post as a child node of the post's title.

You can include topics in your RSS feeds by installing k-collector, an ENT 1.0 compliant add-on to either Radio Userland or Movable Type.

Clicking on the small up-arrow wedge at the left of each topic inserts into the outline a list of related posts, as published by the W4 server.

What's still missing in the activeRenderer browser is the ability to view and transclude topics in the 'latest news' outlined view of Radio's aggregator. First we must modify the aggregator itself to add ENT 1.0 topics support. If we reach that stage, adding transcluding topics to the outlined view will be a snap.