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In WordPress there's no way to apply terms to the menu system. Menu Rules solves this problem and gives you framework to write your own menu extensions..
You have page that has custom post type called 'products You have page that lists products.
user visits the page and the item becomes 'active You double-click from to product and the item loses its active state.
Give it meaningful like in the title field.
In the terms field is singular 'product.
Choose Emulate current page as subject but do not create menu item. as the menu rule.
Find your products page in the menu dropdown.
Create class that extends Menu Rules Handler and includes handler method..
Built-in rules are locate in menu-rules rules.
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