A visual hack for organizing your notes

I am always advocating for keeping and carrying only one notebook for all projects. Maintaining a single notebook does have its own problems and so I watch for interesting solutions to them. One problem is how to quickly find project specific notes? This solution is a simple means to visually organize the notebook's content.

From Japan, a Brilliant Notebook Hack for Organizing Your Notes: A simple trick to easily index and find the information you need

I am reminded that it is time to revisit my Keeping Your Academic Shit Together document.