st: Eq command

["Vartia, Niini" <Niini.Vartia@iue.it>]

Dear Statalisters,
 
Where could I find information on how to use eq command? If I have understood right, the command is still working in the new versions of Stata, but it is not in the manuals.
 
Thank you in advance.
 
Laura Vartia

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