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 2 Item 1
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 2
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 3
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 4
Use navigation mechanisms in a consistent manner. [W3C WCAG
1.0, 13.4]
Priority 2 Item 5
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 6
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 7
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 8
Do not use tables for layout unless the table makes sense
when linearized. [W3C WCAG 1.0, 5.3]
Priority 2 Item 9
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]