VDL Tags and Attributes
 
 All VDL tags and standalone attributes are prefixed with vdl- so that they are easy to identify and don't conflict with current or future HTML tags and attributes.  
 
 Standalone attributes are VDL attributes that can be used on any tag - i.e they can be used in standard HTML elements as well as VDL tags. For example, both of the following are valid usages of the 
 vdl-text standalone attribute: 
 
 
<vdl-section heading="Welcome to Portfolio Optimization"> <p vdl-txt="=scenario.entities.Return.value"></p> </vdl-section>and
<vdl-section heading="Welcome to Portfolio Optimization">
             vdl-text="=scenario.entities.Return.value"   
</vdl-section> 
Note, as in the above code snippets, that VDL tags must have closing tags specified in their markup.
Some VDL tags - such as <vdl-section> have attributes to customize their behavior - these attributes within VDL tags are not prefixed.
Refer to the Xpress Insight VDL Reference for detailed information on all available VDL tags and attributes - you can find it at http://www.fico.com/fico-xpress-optimization/docs/latest/insight/vdl_reference/index.html.
 
