The HISTOGRAM statement now supports the OVERLAY option, which overlays onto a single plot histograms that are associated with different levels of a CLASS variable.

Maximum likelihood estimation for Johnson distribution parameters has been improved. You can fit a Johnson distribution by specifying the SU option in the HISTOGRAM statement. You can request maximum likelihood estimation by specifying the FITMETHOD=MLE suboption, and you can control the optimizer that performs the estimation by specifying the new OPTBOUNDRANGE=, OPTMAXITER=, OPTMAXSTARTS=, OPTPRINT, OPTSEED=, and OPTTOLERANCE= suboptions.