To help you create the article, could you provide more context? (Is it software, a data set, or media?)
If you are putting together an article related to file management or the contents within a potential archive, here is a recommended structure based on current documentation best practices: A clear, descriptive title.
If you have located the "Dennah" rar file from another source, here is how to use it:
Explain where to find the file and how to use WinRAR/7-Zip.
Use a file compression utility like WinRAR or 7-Zip to open the file.
