Web server and application server vendors that want to provide JSP containers that conform to the tag extensions specification.
Web authoring tool vendors that want to generate JSP pages that conform to the tag extensions specification.
Service providers that want to deliver functionality as tag libraries.
Sophisticated JSP page authors that want to define new tag libraries for their use, or who are responsible for creating tag libraries for the use of a group .
Eager JSP page authors who do not want to or cannot wait for web authoring tools, or even a user 's guide.
This document is not a user's guide, but it contains some positioning and explanatory material.