W3C has adopted XHTML Basic as the coding standard for future mobile devices.

In doing so, it has turned its back on WML and its previous (early 1998) standard, CML. However, features from each have been retained and rolled into Basic XHTML.

Supported Features

• Simple Tables (they should follow the WAI guidelines)
• Simple Forms
• Meta information
• Images
• Basic text (including paragraphs, headings and lists)
• Hyperlinks

Unsupported Features

• Stylesheet style element
• script and noscript elements

• <b>, bi-directional and other presentational text extensions. Presumably, semantic structures
  such as <strong> will be interpreted by User Agents in an appropriate manner.

• Frames
• File and image form input types
• Nesting of tables