title: Explain the concept of a stack frame in a nutshell
body: <p>It seems that I get the idea of <em>call stack</em> in programming language design. But I cannot find (probably, I just don't search hard enough) any decent explanation of what <em>stack frame</em> is.</p>
  
  <p>So I would like to ask someone to explain it to me in a few words.</p>