Web Content Accessibility Guidelines (WCAG) 2.0
The WCAG 2.0 is a W3C recommendation since 11th December 2008. It is basically some recommendations for making web content more accessible. Following these recommendations will make the web content accessible to a wider range of people. In WCAG 2.0 recommendation, W3C gives stress on mainly four points. The key aspects are perceivable, operable, understandable and robust. Each of them is explained below.