Complete documentation tells your clients how to use your product to achieve their goals.
To be complete, the documentation must be more than a mass of information. It must be pertinent to your product and well-explained from the users' point-of-view.
A slender handbook containing necessary data is not intimidating.
Focused documentation ensures a higher readership and more effective use of your product.
What is
documentation? —
Easy-to-find topics 
