Continuing the theme of integrating outside sources the MindManager 8 Browser Pane also functions as a... wait for it.. Browser!
Internet: Below you can see a topic hyperlink has launched the Browser Pane with a rather fine website
This shows it working with my system documentation - The application topic links to it's product website.
File Explorer: Clicking a folder link opens a File Explorer view. All the normal functions, like different views, are supported including drag 'n drop back to the MindManager map.
PDF: This will depend on your viewer but I have tried both Adobe Acrobat & Foxit reader.
This map summarises uses I've found for the Browser Pane so far. There are sure to be plenty more!