d SJ4-1 st0056. Semi-nonparametric estimation of extended ... d Semi-nonparametric estimation of extended ordered probit models d by Mark B. Stewart, University of Warwick d Support: mark.stewart@@warwick.ac.uk d After installation, type help ^sneop^ f st0056/sneop.ado f st0056/sneop.hlp f st0056/sneopll.ado