How to use.

If there is an image beside the active Thought, hold the mouse over it for a while to see full-sized image.
If there is an icon beside a Thought, there is a URL associated with the Thought, it will appear here in the properties section. Click the link to open associated web page. Images override icons, check notes for associated URLs.
Click a Thought to activate it. 
Use the arrows to expand or collapse this section.