title: On which Windows systems are Command Extensions disabled by default?
body: <p>According to this page on <a href="http://ss64.com/nt/setlocal.html" rel="noreferrer">setlocal</a> Windows batch command, Command Extensions are enabled by default. Are there any Windows systems where it is not enable by default? Do I really need to explicitly include  <code>setlocal EnableExtensions</code> in any of my batch scripts?</p>