Oh, okay,
I just now (re-)read the document "MSYS_VS_CYGWIN" where it explains that the
observations I made below are by design, but it doesn't explain why it was set up that way.
What's the advantage of setting things up that way?
$ mkdir usr
mkdir: cannot create directory 'usr': File exists
$ cd usr
$ ls usr (lists contents of "/" directory)
$ cd /
$ mkdir tmp
$ cd tmp
$ ls tmp (lists contents of C:\Windows\Temp)
Steve Gallo
Stockton, California