Board Thread:Support Requests - Getting Started/@comment-34201470-20180425145932/@comment-35295812-20180425173732

There's a way to remove categories from pages without going into classic editor. You can go to the page (it has to be unprotected) that has one or more unwanted categories click on the "edit" button, then go to source editor (it's listed on the button that has the three lines that's next to the 'cancel' button) then scroll all the way down, and you would see "[ [ Category : categoryname ] ]" then you can just remove the code and once you save the page, reload the page and the unwanted categories will be gone. You can take this page's history on my wiki for example.

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I recently removed some categories from the page using source editor.