To edit the whole page at once, click the "edit this page" tab at the top. To edit just one section, click the "edit" link to the right of the section heading. To edit on Wikipedia, you type in a special markup language called wikitext. See the cheat sheet for the most basic wikitext codes. See How to edit a page for more details and examples of making links, using bold and italics, linking to images, and many other things. See also Alternative method of editing.