This is a Tina MVC page.
Under normal circumstances you should not edit this page.
When the Tina MVC plugin is active this content will be overwritten by the output of the active controller.
If Tina MVC is active, and you can read this from the public side of a Worpdress page (i.e. not from the ‘Page edit’ admin menu) then
Tina MVC may have ‘lost’ this front end controller page (this can happen if you edit this page from within WordPress).
Deactivate and reactivate Tina MVC to fix.
If Tina MVC has been deactivated then this becomes a ‘normal’ WordPress page and therefore you can read this text.
You can safely delete or hide it.