Source: American Library Association
Published: 13 August, 2019
As librarians, we are very familiar with annotated books and articles – documents with highlighted passages, notes in the margins, and maybe a few cryptic drawings included. Web annotation takes those practices and makes them available to use in marking up web pages and other web documents in such a way that when we return to those online documents, the annotations are still there – persistent – and are perhaps joined by new annotations by others, or even responses to annotations that we originated. These annotations are not actually saved on the web document however; instead they reside on the servers of the annotation service being used, and exist as an overlay that can only be seen by other annotators, depending on whether the annotation was made public, group-only, or private.