SUBJECT:  Duplicate value identification
AUTHOR:   Mac Jacobs, Department ETS/ICS
	  Faculty of Social Science
	  University of Utrecht
	  The Netherlands
SUPPORT:  FAX (011)-31-30-53 4405
	  E-MAIL: CUSMAR@CC.RUU.NL
 
COMMENTS:
Use standard in1 installation instructions. From inside Stata, on-line
help is available.  Type 'help chkdup'.