The outliner has commands that make it easy to browse and reorganize structured information. Getting started To create a new outline, launch the Radio application and choose New from the File menu. To try out the instructions on this page, choose Open from the File menu, and open states.opml in the Tutorial Files sub-folder of the Radio UserLand folder. Here's a screen shot of the outline as it opens. As you look at an outline, scan down the left edge looking for black wedges.
Any black wedge can be expanded, it has information collapsed underneath it.
To expand a line, double-click on the wedge. The illustration below shows an outline with a headline collapsed, and the same outline with the headline expanded. Reorganizing You can move a line using the mouse or with command keys. When you move a line, all the lines underneath it move also, whether or not they're expanded. To reorganize with the mouse, point at the wedge of the line you want to move.