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Semantic Markup

Semantic markup involves two practices in order to be properly written. It requires that HTML elements are used correctly and that content and style are separated. The HTML element tags tell browsers about the contents of the element, which allows the machine to read them. Separating the content of the web page from the style of the page is accomplished by the use of CSS. This allows the HTML elements to be used they way they were intended, rather than to style the page.

Accessibility

Section 508 is an amendment to the United States Workforce Rehabilitation Act of 1973. It is a federal law which requires all electronic and information technology made or used by the federal government to be accessible to disabled individuals.

Search Engine Optimization

Search engine optimization is the process of creating a website or web page to be more visible to search engines. This results in higher placement on the search reults list, and ultimately more customers. One way to accomplish this is by structuring the site in a way that search engines are able to understand using proper HTML.

Putting it Together

Semantic markup, Accessibility, and SEO work together. Proper semantic markup allows the machine to read the page. This enables screen readers to work properly for the visually impared. It also results in seasrch engines being better able to identify the content of the site and place it higher on the appropriate search lists.