delete category tag

How do I delete a category tag from a reference?
Volker

If that category is still

If that category is still available, you can select those references, and click the "Categorize..." button. Select the category and click the Remove button. For a single reference, you can check off that category on the reference editor. If that category is already deleted, you can select references and go to "Edit | Replace". Limit the replace operation to field "Categories". For a single reference, you can just select that category in the Categories field and delete it.