I agree with the trial and error, although it seems to me that when
you want to use them inside of a While loop, it increases the chance
that you have to create a command string rather than using the
ampersand.  But I ALWAYS try the ampersand first.

Karen

In a message dated 7/9/2012 11:56:04 AM Central Daylight Time, 
[email protected] writes: 
> At 12:19 PM 7/9/2012, Bruce Chitiea wrote:
> 
> >I suppose my next question would be: 'Is there a reliable general 
> >rule prescribing the use of this approach?'
> 

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