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st: about deleting variables

From   Hailing Zang <>
Subject   st: about deleting variables
Date   Tue, 10 Dec 2002 15:31:17 -0800 (PST)

Hi there,
I have a question about deleting variables that have 
a certain character. I know if I want to drop, then
simply use
.drop if<character>

But if I want to keep the first observation that has
that character, what should I do?

Thanks a lot!

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