To select multiple linked objects, hold down the CTRL key, and click each linked object. To select all links, press Ctrl+A. Click Break Link. If the link used a defined name, the name is not automatically removed. You may want to delete the name as well, by following these steps: On the Formulas tab, in the Defined Names group, click Name Manager. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.