Testing of reference guides and user guises check that all features are reasonably documented. Every page of documentation should be keystroke-tested for the following errors:

* Accuracy of every statement of fact

* Accuracy of every screen shot, figure and illustation

* Accuracy of placement of figures and illustation

* Accuracy of every tutorial, tip, and instruction

* Accuracy of marketing collateral (claims, system requirements,and screen shots)

* Accuracy of downloadable documentation(PDFs, HTML, or test files)