This technique relates to the following sections of the guidelines:
Use the abbr element to expand abbreviations.
Mark up abbreviations with abbr and use title
to indicate the expansion. At a minimum abbreviations must be marked
where they first occur in the delivery unit and after every entry point
into the delivery unit. An entry point into the delivery unit is
each identifed anchor which can be navigated to via a URI.
A best practice is
to mark all occcurences of an abbreviation within the delivery
unit. Developers intending to transition to XHTML should begin
using this best practice as XHTML 2.0 indicates that all occurrences
should be marked.
These examples show how to use the abbr element
properly.