Project history represents everything that has happened in a project.
Actions by all collaborators can be seen here. You will need at least edit rights in a project to view the history. If the history action is associated with a specific notebook, you can click the action and you will be focused to the notebook where the change was made.
Specific modifications to notebooks or cells can't be viewed yet - these are coming soon.
Not all history actions can be seen. Currently we will show changes to notebooks, executions, changes to filesystem (rename, delete, new file created), kernel restarts or hardware restarts.
We will display only the latest 1000 actions.