Web developers must satisfy this item. These guidelines represent more complex accessibility features that must be addressed in web page design. Generally, these items would be addressed after satisfying Priority 1 items.
| Priority Number | Priority Definition |
|---|---|
| Priority 2 Item 01 | When an appropriate markup language exists, use markup rather than graphics to convey information. For example, use MathML to mark up mathematical equations instead of using graphics to represent symbols. [W3C WCAG 1.0, 3.1] |
| Priority 2 Item 02 | Create pages that use the transitional or the strict document type declaration (e.g., <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> or <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">) and include the appropriate declaration as the first line of every HTML page. [W3C WCAG 1.0, 3.2] |
| Priority 2 Item 03 | Use relative rather than absolute units of measure (e.g., for margins, font sizes, borders, etc.). [W3C WCAG 1.0, 3.4] |
| Priority 2 Item 04 | Use navigation mechanisms in a consistent manner. [W3C WCAG 1.0, 13.4] |
| Priority 2 Item 05 | Specify the expansion of each abbreviation or acronym in a document where it first occurs. Providing the expansion in the main body of the document also helps document usability. [W3C WCAG 1.0, 4.2] |
| Priority 2 Item 06 | Inform the user before changing focus from the current window or before causing a "pop-up" or other new window to appear. (See also P1 #12) [W3C WCAG 1.0, 10.1] |
| Priority 2 Item 07 | Provide multiple methods to explore sites that are more than two layers deep (e.g., add a site map or table of contents). [W3C WCAG 1.0, 13.3] |
| Priority 2 Item 08 | Do not use tables for layout unless the table makes sense when linearized. [W3C WCAG 1.0, 5.3] |
| Priority 2 Item 09 | Create a logical tab order through links, form controls, and objects. [W3C WCAG 1.0, 9.4] |
| Priority 2 Item 10 | Until user agents provide the ability to stop auto-redirect, do not use markup to redirect pages automatically. Instead, configure the server to perform redirects. If necessary to re-direct a page and configuring the server is not possible, label the action and allow the user to invoke the link to the new page. [W3C WCAG 1.0, 7.5] |
Lynx Viewer - This service allows web authors to see what their pages will look like (sort of) when viewed with Lynx, a text-mode web browser.
CSS Validator - W3C CSS Validation Service.
MarkUp Validation Service - A free service that checks documents like HTML and XHTML for conformance to W3C Recommendations and other standards.