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A checkbox appears when you hover in front a keyword. Select this box for all the keywords you want to delete.
Click the ellipses (…) on the top of the page.
Select Delete keywords from the menu that appears.
Select Yes when prompted to verify you want to delete the keywords.
Deleting All Keywords
You have the option to delete all the keywords added to an entity type. You will would use this option if you decide not to use keywords along with the pattern for an entity type that uses regular expression or if you want to clear the keyword lists list to start a new one the list over from scratch. This option is done available on the main page for the entity type.
Select Content.
Select Entity types.
Select the entity type that contains the keywords you want to remove.
Select Edit in the Keyword proximity section. The button becomes ellipses (…)
Select the ellipses.
Select Delete all keywords from the menu that displays.
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Select Yes when prompted to confirm you want to delete all keywords.
