This document provides guidance on aspects of the design of human-system interaction, including conceptual design, user-system interaction design, user interface design and navigation design for interactive systems.

This document applies to all design and development approaches and methodologies, including human-centred design, object-oriented, waterfall, human factors integration (HFI), agile and rapid development.

It is intended for the following types of users:

—？user interface designers, who will apply the guidance during the development process;

—？developers, who will apply the guidance during the design and implementation of system functionality;

—？evaluators, who are responsible for ensuring that products meet the recommendations;

—？designers of user interface development tools and style guides to be used by user interface designers;

—？project managers, who are responsible for managing development processes.