When you select the topic and add your research work into it.  You draft the content, which may have errors. These errors can be in format, layout, sentence, grammar or in placing keywords. These errors shall be removed before the reader reads it. Once you know how to create Wiki page, you must know the reason behind proofreading.  The articles before you publish it goes through multiple channels, where it is checked that the document is original, free from plagiarism, and there is no opinion or marketing tone used. Have you noticed your article be checked?