An article can contain a lot of information, like different prices, lists, variants and other things. When you are going to create a new article, you can use the copy function to get going.
How to copy an article
Go to Sales > Articles > Create article to create the first article or go to an existing article to copy that. Open the menu in the first box and click “Copy”.
This dialog pops up asking for the article number for the new article. Click “Create” and you are done.