Rule HTML-1
Each page must include a DOCTYPE declaration to facilitate rendering and validation.

Description

Best Practice Type: Pass/Fail

Each page must include a DOCTYPE declaration to facilitate rendering and validation.

Markup

DOCTYPE (HTML4)

Specify the DOCTYPE the page uses to validate HTML coding

Associated Accessibility Guidelines and Standards

Guideline or
Standard
Requirement Priority Test
Type
IITAA 1.1 Use valid, standard web programming code. Required Violation
Section 508 none none
WCAG 1.0 11.1 Use W3C technologies when they are available and appropriate for a task and use the latest versions when supported. Required Violation
WCAG 2.0 4.1.1 Parsing: In content implemented using markup languages, elements have complete start and end tags, elements are nested according to their specifications, elements do not contain duplicate attributes, and any IDs are unique, except where the specifications allow these features. Required Violation

Examples

none

Evaluation Techniues

none

Testsuite Tests

none