5.8. Setting Display Options with mv_value
A value can be specified that will be set in the link with the mv_value parameter. It takes an argument of var=value, just as setting a normal variable in an Interchange profile. Actually mv_value is a misnomer, it will almost never be used in a form where variable values can be set. Always specify it in a one-click search with va=var=value. Example:
[page href=scan arg="se=Renaissance se=Impressionists va=category_name=Renaissance and Impressionist Paintings os=yes"]Renaissance and Impressionist Paintings</a>
Display the appropriate category on the search results page with [value category_name].