] Diagrams are an essential tool for communicating
] information architecture and interaction design in Web
] development teams. This document discusses the
] considerations in development of such diagrams, outlines
] a basic symbology for diagramming information
] architecture and interaction design concepts, and
] provides guidelines for the use of these elements.

The set of elements is available for every major drawing program.

jjg.net: a visual vocabulary for describing information architecture and interaction design