About critical numbers
          Critical numbers are key performance indicators, or KPIs, that you can use to get a quick view of important statistics or track progress. 
         
         For example, the Buyer Home form in SyteLine, as shown in this example:
         Critical numbers are based on IDO calculations. For example, you can quickly generate numbers based on this information:
- The sum, count, average, minimum or maximum of a value
 - The Group By and Date Range properties
 - Comparisons with other properties on the form
 
You can see the details behind the critical number using an "enhanced drilldown" and do further analysis on issues that you discover.