title: "require" not working in dr racket
body: <p>I am new to scheme and I am trying to trace a function. I have to load the "trace" function. According to the racket documentation, I have to execute a: </p>
  
  <blockquote>
    <p>(require racket/trace)</p>
  </blockquote>
  
  <p>But the response I am getting back is</p>
  
  <blockquote>
    <p>require: undefined; <br />
    cannot reference undefined identifier</p>
  </blockquote>
  
  <p>I am baffled. I am using language "R5RS" if that makes a difference. can't find anything online or on stack overflow on this. </p>