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help for ^unique1^                                                (STB-54: dm77)
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^unique1^ removes duplicated observations. 
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^unique1 using^ filename


Description
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^unique1^ removes the duplicated observations in the current dataset and retains 
the unique observation without any repetition. The observations are in the same
order as the original dataset except that repeated observations are deleted.


Example
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 . ^unique1 using^ filename


Author
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       Duolao Wang
       London School of Hygiene and Tropical Medicine, UK
       email: d.wang@@lshtm.ac.uk


Also see
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On-line:  help for ^append^, ^cross^, ^joinby^, ^merge^