Code & Navigation.
The process of conceiving, specifying, designing, programming, documenting, testing, and bug fixing involved in creating and maintaining applications, frameworks, or other software components. it includes all that is involved between the conception of the desired software through to the final manifestation of the software.
A study to measure how the website is easy for everyone to use, regardless of their special needs. It could be done by specific tools, following the W3C guideline or even by an usability test.
Adaptive websites adapt to the width of the browser at a specific points. In other words, the website is only concerned about the browser being a specific width, at which point it adapts the layout.
The concept of constraints in design can be defined as the practice of limiting user actions on a system. Constraints limit the actions that can be performed by the user, thus increasing the usability of the design and reducing the likelihood of operator error.
When a site utilizes new technology, if disabled, the content maintains effectiveness for the users.
Hick's law, or the Hick–Hyman Law, named after British and American psychologists William Edmund Hick and Ray Hyman, describes the time it takes for a person to make a decision as a result of the possible choices he or she has: increasing the number of choices will increase the decision time logarithmically.
Variation of usability testing where representative users perform realistic tasks by interacting with a paper version of the interface that is manipulated by a person 'playing computer,' who doesn't explain how the interface is intended to work.
A formal way of documenting a solution to a common design problem. The idea was introduced by the architect Christopher Alexander for use in urban planning and building architecture, and has been adapted for various other disciplines, including teaching and pedagogy, development organization and process, and software architecture and design.
Progressive enhancement is a strategy for web design that emphasizes accessibility, semantic HTML markup, and external stylesheet and scripting technologies.