It is not very often that I venture back out into the world of pen and paper. However when designing complex sales funnels that is what I sometimes have to do to see the overview.
This complex sales funnel was one I was engaged to create. It was for a multi product website and social media account that was required to handle potential clients coming from many sources, to purchase multiple products and email capture in an email program and then follow up emails.
Yes the attached image is hard to read and that is deliberate.