I definitely use doodling to focus and to enhance my notes including embellishing the lettering. Makes it very easy to spot words later. And, I might add that when I took art history, my quick Doodling practice helped me in lecture to quickly sketch whatever was on the slide, draw arrows to my note, etc, and enhance with font embellishments appropriate to the time period. And now when I go to the doctor with my mother, I can easily find an old note in my journal.