Employing HTML code for page structure or presentation rather than to support the content would seriously impact the ability of assistive technology to 'read' a page. The HTML structure markup should be used to focus on the meaning. When it comes to the structural details, the most important thing for people with visual a recognition barrier is keeping the screen uncluttered and using consistent page layouts. Generally speaking , using HTML 4.0 is recommended though some old browsers would not support it. In addition, when an appropriate markup language exists, use markup rather than images to convey information. For example, use MathML to mark up mathematical equations, and style sheet to format text and control layout. ake the E-Learning Center's Dreamweaver Workshop to learn how to apply a correctly formatted, accessible Cascading Style Sheet.