Many different types of bars can appear in the chart portion of a Gantt chart view. Each type of bar can represent a kind of task (such as a summary task) or a condition of a task (such as completed).
The Gantt Chart Wizard offers limited Gantt bar formatting, but the Format Bar Styles command (Format menu) gives you complete control over Gantt bar formatting.
Although the Gantt Chart view is often synonymous with project plans, the Network Diagram view (sometimes incorrectly referred to as a PERT chart) is useful for focusing on the relationships between activities.
The Calendar view is especially helpful for those who prefer a traditional “month-at-a-glance” format.