In a message dated 7/14/05 11:21:14 AM Pacific Daylight Time, 
[EMAIL PROTECTED] writes:

<< There can be a major problem with the second syntax depending on what you
 are doing to the file.  The SELECT filevar syntax does not create a select
 list even in memory.  It traverses each group in order as you perform the
 readnext command keeping a pointer to where it left off.  >>

It's my belief that both methods work the same way in this regard.
Did you test to see that it actually traverses the entire file once to build 
LIST ?
I'm not sure that's the case, but I might be wrong.
Will Johnson
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