Two or three respondents asked for an example of my problem.  Here's 
what's happening to me now.  I can't reproduce how I got to this point, 
though:

 > ls()
[1] "All8"   "All8Sites"  "A"   "B"  "C"  "i"  "n"  "D"  "F"
 > X
Error: object 'X' not found
 > attach(All8Sites)
 > ls()
[1] "All8"  "All8Sites"  "A"  "B"  "C"  "i"  "n"  "D"  "F"


"X" is one of the variables in the data frame I attached in the third 
command above, but it's not listed by >ls().  If I enter > X now, its 
values ARE listed, but it's hiding somewhere.  What is happening here?  
How can I get the variables in that data frame listed when I attach it?

Thanks to all.
David


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