A powerful analytic workflow is to use regions as markers. This allows more flexibility than the conventional markers of the global window.
For example in terms of colors: you can activate the track or deactivate it, depending if you want a discrete or colorful presence of the markings.
To create the regions you can just press W, and this is easier to remember than other shortcuts.
Here you see an example of me using them in order to re-compose for orchestra a musical guitar recorded on guitar.