The standard that I am reporting on would be to provide equivalent alternatives to auditory and visual content. A link to more detailed information can be found by going to this web site.
This concept is a very important one that can help with navigation and more importantly help internet users that are disabled by blindness or deafness. The key idea is to provide a text equivalent for all non-text elements such as images, symbols, etc… Even auditory descriptions of text and images should be accessible for the blind to navigate a webpage through sound. Auditory tracks should be synchronized with the text. Likewise with any other form of multimedia, the text should be synchronized with the audio track.
For a website to be as effective as possible to as many users as possible it should be priority to reach out to the deaf and blind. In order to implement this into a website the code writer needs only write a bit more code in some instances to allow a text description to appear over an image or even perhaps have an auditory description of each web page element as a blind person tabs through the web page.