Thank to Kit Baum, an update to my program margeff is available through the SSC archive.
To install it, please type
 ssc install margeff
The new features are as follows
- margeff now supports tobit, cnreg, truncreg and heckman. The partial effects estimated are changes in the dependent variable conditional on the dependent variable being observed.
- Options nodiscrete and nooffset were ignored due to incorrect syntax specification. This is fixed.
- Weights were not correctly handled, and margeff stopped if pweights were requested or left behind by previous estimation. This is fixed.
- New option nowght is added. If nowght is specified, weights used in previous estimation will be ignored
Tamas
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Tamas Bartus, PhD
Associate Professor, Institute of Sociology and Social Policy
Corvinus University, Budapest 
1093 Budapest, Fovam ter 8.
Phone: +36-1-482-5290         Fax:   +36-1-482-5226
Homepage: www.uni-corvinus.hu/bartus
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