The URL=, HTML=, and
HTML_LEGEND= options identify a variable in the data set that contains
the link information. The variable can contain a link URL only or
it can contain other functionality, such as a data tip or a link target.
If the variable contains only a link URL, it is referred to as a link variable
. If the variable contains a data
tip, link target, or other functionality, because it does more than
establish a link, it is referred to as an enhancement
. Only link variables can be used with
the URL= option. Both link variables and enhancement variables can
be used with the HTML= and HTML_LEGEND= options.
The syntax of the link
variable value depends on the link option with which it is used. For
the URL= option, the link value syntax is as follows:
For the HTML= and HTML_LEGEND=
options, the link value syntax is as follows:
An enhancement variable
is used when other attributes such as TITLE= or TARGET= are included
in the link value in order to provide additional functionality. The
enhancement value syntax is as follows:
The URL= option provides
the simplest means of adding drill-down links to your presentation.
You specify only the URL string, and the SAS/GRAPH
the URL into an HREF= attribute-value pair for you. The HTML= and
HTML_LEGEND= options enable you to add one or more HTML <A>
tag or SVG device driver attribute-value pairs to your link value
in order to add functionality to your links. However, you must code
the attribute-value pairs yourself, which can be complicated when
multiple attribute-value pairs are included.
Values created for the URL=
option, and values created for the HTML= and HTML_LEGEND= options
are not interchangeable.