title: What is the meaning of Powershell's Copy-Item's -container argument?
body: <p>I am writing a script for MS PowerShell.  This script uses the <code>Copy-Item</code> command.  One of the optional arguments to this command is "<code>-container</code>". The documentation for the argument states that specifying this argument "Preserves container objects during the copy operation."</p>
  
  <p>This is all well and good, for I would be the last person to want unpreserved container objects during a copy operation.  But in all seriousness, what does this argument do?  Particularly in the case where I am copying a disk directory tree from one place to another, what difference does this make to the behavior of the <code>Copy-Item</code> command?</p>