unit and/or editing the content in her or his section of the shared data unit. For instance, the graphical representation may be green to indicate presence. Or, the graphical representation may be faded to indicate non-presence or that the user is off-line. [0054] Furthermore, the user interface presents a menu 204 that provides access to different options (e.g., features) useable to edit content and/or perform other functions with respect to the content (e.g., different ink colors for marking, an eraser, a brush, a ruler, undo inking, repeat inking, add an image, search for content, snap a photo, provide a reaction, etc.). One of the accessible menu options includes a get attention feature 206, a user selection of which is shown in FIG. 2A using a cursor element. [0055] Moving to the user interface 208 in FIG. 2B, after selecting the get attention feature 206 in FIG. 2A, the user may be presented with an option 210 to select specific users to which the request to view content is to be sent. In the example of FIG. 2B, the user selects user 102C or “UC”. The user can select any number of users to request attention from, including all the users. In some examples, a default request sends the requests to all the users participating in the multi-user sharing session. [0056] FIG. 2C shows a user interface 212 in which a user can identify a portion of the content in her or his section for other users to focus on. For example, the user 102A can use a tool 214 associated with the get attention feature 206 to alter the visual appearance of the portion of the content 216 (e.g., highlight, change a color, etc.). In the example of FIG. 2C, the user 102A has drawn a rectangle around the portion of the content 216 in order to highlight content which the user 102A wants other users to focus on. Consequently, when the content is displayed to the other users, the portion of content identified by the user is graphically distinguished from other portions of the content. In this way, the other users know to focus a review on the identified portion of content. [0057] FIG. 2D shows a user interface 218 that enables a user to determine whether another user editing the same content as the user has previously called others to view the content. In the example of FIG. 2D, user 102A and another user are editing the same content in the same section or an overlapping section of a data unit. Furthermore, the other user may have already requested that some or all of the users that have access to the shared data provide attention to the displayed content that multiple users are editing. Accordingly, when user 102A wants to identify users to provide attention, the user interface 218 can be configured to inform user 102A that a particular user has already been requested to provide attention. For instance, as shown by element 220 which associates a raised hand with the representation for user UD (e.g., user 102D), user 102A is notified that the attention of