title: What does "subject" mean in certificate?
body: <p>The related link is this <a href="http://msdn.microsoft.com/en-us/library/bfsktky3(VS.80).aspx" rel="noreferrer">MSDN article</a>.</p>
  
  <p>I am always confused about the term "subject", for example, sk option 
  "Specifies the subject's key container location", sr option "Specifies the 
  subject's certificate store location". What exactly does subject mean here? The 
  certificate owner? The certificate issuer (e.g. the root CA which issues the 
  certificate)? Or something else?</p>