Incubator is a basic brainstorming tool letting you sketch out your ideas. Drag and drop words and shapes and connect them together, creating branches for the different levels of ideas. The data drawer that slides open at the bottom of your screen also displays a tree view of your ideas.
Links to websites can be added via the Inspector Panel. Just select the link type and copy in the url. Once you've come up with all your ideas, it's time to export them. Either save them to PDF or print them out on paper. In the printing window, you'll be able to adjust how header and footer text appear in print.
While not the most advanced of brainstorming tools, Incubator is fitted with most of the features you'll need to jot down, organized and export your ideas.