HTML, XHTML & CSS

12
Part V: The Future of (X)HTML
✓ — a run of text in a document marked or highlighted for easy
reference, owing to its relevance to or citation in some other document
✓ — a visual indicator for some measurement (disk usage, for
example)
✓ — a section of a document that provides navigation aids and
information
✓ — some type of output, perhaps from a script-based calculation
or API-based program call
✓ — a visual meter for task completion (downloading a file,
performing some series of calculations or operations)
✓ , , — markup designed to accommodate annotations
created in the Ruby (also known as “Ruby on Rails”) Web programming
language
✓ — a generic document or application section, which may be
used with h1–h6 elements to delineate document structure
✓ — a summary, legend, or caption for details information
✓ — a value for representing a date and/or a time
✓ — provides a standard way to handle video information for
multimedia content (also ties into the new APIs that HTML5 makes available,
and likewise browsers will offer a built-in, default video interface as
well)
✓ — denotes a possible or potential line break point for text flow
To learn more about these new elements, visit this portion of the HTML5
specification: http://dev.w3.org/ HTML5/html4-differences/#newelements.
Attributes new in HTML5
A variety of new attributes are introduced for HTML5, some for improved
consistency with other, pre-existing HTML elements, and others to add new
(or extend existing) functionality. As in the previous section, we present
these attributes in alphabetical order in the following two sections.
New element-specific attributes for HTML5
For the following list, we follow the attribute name with the HTML5 element
(or elements) in parentheses to which that attribute applies. Here are the
new element-specific attributes for HTML5: