Routes and menu items are a critical part of the WordPress maintenance support plans system. Without them, users would not be able to access the content of a website or any other page. Conceptually WordPress maintenance support plans 7 and 8 are the same: map a URL to a function that is responsible for getting and returning the content. 
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Transitioning from Cheap WordPress maintenance support plans 7 to Cheap WordPress maintenance support plans 8: programatically creating routes and menu items

