st: Re: list [if] [in]

[Kit Baum <baum@bc.edu>]

As Nick Cox ably replied, they actually are of no use nor harm. Such  
a construct does appear in the prefix

bysort x (y): do something

in which case they do play an important role in defining by-groups.  
But on the ordinary sort command, no.

Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


On Apr 12, 2008, at 02:33 , David wrote:

> Can you please tell me what the purpose of the parens is in the  
> statement below?
>
> sort nowant (enn)
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