as mentioned in the question, how should the web page annotation function of the website be realized? (note: it is not similar to screenshot editing of a web page. If the text in the site can be annotated, the user can see it next time after the annotation, and then the menu on the right can display all the annotation information. Click a single annotation. The page will scroll directly to the annotation). It is also possible to give a reference example or a link to related content. For an example of
page annotations, please see http://collamark.com/