Notice that it doesn’t have any language or locale details. Also, using the x-default tag isn't mandatory but good exercise. To add a meta key word, simply click inside the "Increase tag" field and validate by pressing return. It is possible to take out tags by clicking the cross. Google’s https://dataway83827.bloggazza.com/28294175/the-fact-about-was-ist-ein-canonical-tag-that-no-one-is-suggesting