The map this event had been using was the driving force to switch all of my client accounts to CAD. In 2002, I inherited a 9th or 10th generation xerox with cut-out chits pasted in place and white-out everywhere. Not only did it look like an aesthetically challenged 2nd grader had made it, it was not to scale and it took forever to make even a minor change. Needless to say, the Mayor's Office of Special Events took to the new CAD drawing like a duck to water and now expects this level of accuracy for all of their summer series of festivals and events.
The top drawing is the overall drawing. The bottom drawing is one of the 5 or 6 working drawings that are generated from the overall drawing with a click or two.