The following symbols are used in the Project Gantt Chart:

1. or Depending on the selected option, either a taskbar or a summary bar show the span of the entire project. If the option to show a late project in red is selected and if one or more jobs in the project are late, these bars show in red.
2. or Depending on the selected option, either a taskbar or a summary bar show the span of the entire in process project in green.  The taskbar shows the percent complete by a light green bar in the taskbar.  The summary bar shows the percent complete by a green bar under the summary bar.  If the option to show a late project in red is selected and if one or more jobs in the project are late, these bars show in red.
3. The release date of the job.
4. The due date of the job.  It may be green for in process or red if late.
5.   Baseline job start date if displaying baselines dates.
6.   Baseline job end date if displaying baseline dates.
7. Last schedule completion date (LSC date) if displaying the last scheduled complete date.
8. Job Promise Date if displaying the job promise date.
9. Job or operation material date if displaying the material date.
10. Shows the start date of the job to the completion date of a job.
11. Shows the start date of the job to the completion date of a late job.
12. Shows the start date of the job to the completion date of an in process job.  The light green bar shows the percent complete for the job.  In the example given here, the job is about 30% completed.
13. Shows the start date of the job to the completion date of an in process late job.  The light green bar shows the percent complete for the job.  In the example given here, the job is about 90% completed.

Placing the mouse over a bar or milestone will display the bar/milestone's hint giving detail on the project/job.