A collaborative content management system allows for the mutual-synchronization of content within a spreadsheet and within a document in which a set of spreadsheet cells are embedded. When a user modifies the embedded set of cells, the spreadsheet is updated to reflect the modification. A set of tasks, for instance each associated with descriptive text and one or more interactive elements, can be incorporated into a set of spreadsheet cells such that a user can interact with the tasks. A data value from a spreadsheet cell can be embedded into a document such that when the spreadsheet is updated and the data value changes, the corresponding embedded data value within the document can be changed. Spreadsheets can also include comments that can be navigated using a movable interface element that changes position within the spreadsheet based on a location of a set of cells corresponding to a comment.