title: What does a lambda prompt indicate at the command line?
body: <p>I just installed <code>Cmder</code> on a Windows box as a precursor to getting Cygwin installed and a bash shell going.</p>
  
  <p>It's my first time installing it, and I notice the prompt character used is lambda 'λ'. I'm more used to seeing '$' as a default prompt character, at least in a *nix environment.</p>
  
  <p>Does a lambda indicate anything in particular from some other computing tradition? Or is this the default just because it looks cool?</p>