Markers
Markers are entities which we can add to the Gant chart by clicking on the Date Square located at the top of the diagram's calendar once 'View' - 'Show' - 'Markers' option is enabled. We can Name it, set its Date and Description. They can mark bullet-points of our ongoing projects, events, project related happenings etc. Markers can also be successfully used to create additional "baselines" on our Gantt chart or to mark important events and dates on our chart while using the Export functionality.