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Is there any way to transform the default "Category" taxonomy menu in the admin panel (once in a post) from a checkbox multi-option to a checkbox single option, or an option box.

My aim is to prevent a user to add a content in more than one category.

Thanks

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    a "checkbox single option" is a radio. – gmazzap Jul 17 '14 at 12:04
  • Thanks for pointing me on the duplicate. I wasn't able to find a matching document in first instance. – Andrea Moro Jul 17 '14 at 12:05

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