Final answer:
Users can leave feedback on an article through comments, star ratings, an article quality index checklist, helpfulness votes, or a knowledge quality survey.
Step-by-step explanation:
An end user can leave feedback about an article in several ways. They can leave a comment on the article to express their thoughts and opinions specifically. Another common method is to give a 1-5 star rating, which allows for a quick assessment of the article’s perceived value. Users may also be invited to fill out an article quality index checklist or a similar form, which can provide the author with detailed feedback on different aspects of the article. Additionally, marking the article as helpful or not helpful is a straightforward binary feedback method that indicates the article's usefulness. Lastly, filling out a knowledge quality survey can offer comprehensive feedback on the user's overall experience and perception of the information presented.