The Filters tab has three sections for date data.

• Date Range
  The date range is used to selecte a date range to be displayed in the chart.
  
• Weekdays
  Weekdays filter displays the selected days in the chart.
  
• Removed Data Points
  Removed Data Points is a list of points that have been removed from the chart. Double clicking on entry in Removed Points list will add that point back into the chart.
  
• Auto Extend Dates
  When selected the date range is automatically extended when the application is restarted