An alias is new guise for the same thing. In the context of a knowledge base, that means a new category for the same article. Aliases in WSN Knowledge Base are used to have a single article appear in multiple categories at the same time. These are not separate articles, but a single article making multiple appearances in your knowledge base.

The advantage of using alias instead of copy is that when you edit the article you will always be editing the original article and all appearances of that article will instantly be updated with the new information. (If you had merely copied the article, you would have to edit each separate instance in each category.) Also if the article is suspended or deleted all references of that article will be removed from the knowledge base.

There are also aliases for categories. These allow one category to be a subcategory of multiple different categories.

To add or remove aliases, edit the article or category.