Bookmarks (within book chapter) is a very useful block available for Moodle 2.6 to 2.8 versions, which provides the functionality of user bookmarks creation within the text of Moodle Book chapter (So-called book pins within the text). This can also be used to leave personal notes onto desired locations within Moodle Book chapter.
Users can create their own bookmarks at any desired position within the text Moodle Book chapters and they can later access it quickly using “jump focus” switch. All the bookmarks will be listed within the block once the user open desired chapter again. This might be useful to anyone who likes to have side notes next to their learning material. The tool can increase accessibility for blind and visually impaired people. Each user can easily create, delete and rename their own bookmarks.
You can download the latest version of the plugin from this link: https://moodle.org/plugins/view/block_bookmarks
Please note that this plugin is not actively maintained anymore and currently seeking a new maintainer.