Ability to create a new cache storage context that won't leak
permissions to its parent process(es).  Getting admin rights in one
window shouldn't imply those rights for every other window on my screen
if I don't want it to.
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The opinions expressed in this message are mine,
not those of Caltech, JPL, NASA, or the US Government.
Henry.B.Hotz@jpl.nasa.gov, or hbhotz@oxy.edu