The tool features a timeline that you can zoom in to mark detailed events or zoom out to annotate larger segments. Annotations are represented by markers that you can drag and re-size with the mouse. Attached text can include multiple fonts, font sizes, and styling.
Like all Project Pad annotation tools, if several users are viewing the same document and one makes a change, everyone will see the change without re-loading the page. This can be used to let several students or a student and instructor work together online.
The tool also supports multiple-level undo and redo so you can back up and correct mistakes.