Warnier-Orr

Warnier-Orr mind maps can describe complex processes and structures. They have 8 simple building blocks. and are easy to understand.

Warnier-Orr diagrams have been used since the early 1970s to design, implement and document computer programs. Since then they have spread far beyond the IT department to describe just about everything from business processes and marketing strategies to how to bake a cake.

Here is a brief tutorial.