MODEL_IF, MODEL_UNLESS, MODEL_ELSE — Displays enclosed section if model sets value to true/false.
<MODEL_IF NAME="foo">
Text to be included if foo is true
<MODEL_ELSE>
Text to be included if foo is false
</MODEL_IF>
<MODEL_UNLESS NAME="bar">
Text to be included if bar is false
</MODEL_UNLESS>
If the parameter in the name attribute is set to true by the output method of the Model, then the text enclosed by the MODEL_IF tag will be included in the template.