@since J2EE1.4, added TAGDEPENDENT,EMPTY,scriptless,SCRIPTLESS
Provides a hint as to the content of the body of this tag.
Primarily intended for use by page composition tools.

There are currently four values specified:

tagdependent    The body of the tag is interpreted by the tag
                implementation itself, and is most likely
                in a different "langage", e.g embedded SQL
                statements.

JSP             The body of the tag contains nested JSP
                syntax.

empty           The body must be empty

scriptless      The body accepts only template text, EL
                Expressions, and JSP action elements.  No
                scripting elements are allowed.
JSP=0
empty=1
tagdependent=2
TAGDEPENDENT=3
EMPTY=4
scriptless=5
SCRIPTLESS=6