Wicipedia:How to edit a page
Oddi wrth Wicipedia, y gwyddoniadur rhydd.
Wikipedia is a WikiWiki, which means that anyone can easily edit any unprotected article and have those changes posted immediately to that page.
Editing a Wiki page is easy:
Simply click on the "golygwch" tab at the top (or the edit link on the right or bottom) of a Wiki page. This will bring you to a page with a text box containing the editable text of that page. (If you want to experiment, please do so in our sandbox, not here. You could open the sandbox in a separate window or tab to be able to see both this text and your tests in the sandbox.)
Type away, write a short edit summary on the small field below the edit-box. You may use shorthand to describe your changes, as described in the legend, and when finished, press "Dangos rhagolwg" to see how your changes will look. Then press "Cadw'r dudalen". Depending on your system, pressing "Enter" while the edit box is not active (when there is no typing cursor in it) may have the same effect as pressing the "Cadw'r dudalen" button. Also, please do not vandalise the information on Wikipedia.
You can also click on the "Sgwrs" tab link) to see the corresponding talk page, which contains comments about the page from other Wikipedia users. Click on the "+" tab (or "golygwch") to add a comment.
Note that MediaWiki version 1.4 will allow each user to set as an individual preference what language they want the user interface to appear in.