The xViz Gantt Chart provides you with the option to display Reference Lines (based on dates) and Reference Ranges on the chart thereby giving an indication of where you are in the project and to assess the level of completeness.
Reference Line - A date line spanning across all the tasks. Configuration of one date will add the reference line on the Chart.
Image 1: Reference Line in the xViz Gantt Chart
Reference Band - Range of continuous dates highlighted in the tasks. Configuring two dates ranges will be highlighted as a band in the chart.
Image 2: Reference Band in the xViz Gantt Chart
We can display the Reference line and Reference Range with Static Approach using the Reference tab which is located in Advance Editor - Static Approach