Input Distribution
If the Data Type for a Histogram is one of your Input Data variables, then the Input Distribution option will display the Statistical Distribution which you defined in the Input Data dialog for that variable. This allows you to see how well the Statistical Distribution you defined was sampled.
The Input Distribution option is available in the right-click menu, and also in the Histogram Plot Parameters dialog when you initially generate a Histogram.
Interval markers can be displayed on the Input Distribution with the Markers option.