Because the site is dynamic, it does not build HTML files for each different version of an article. Instead it generates a "permalink" for every version of the article. It does this based on the article's [`versions` frontmatter](content#versions).
**If you are a content contributor:** You don't need to worry about supported versions when adding a link to a document. Following the examples above, if you want to reference an article you can just use its relative location:
