title: How do I load library to support hashtable in R5RS language (DrScheme)?
body: <p>Looks like R5RS language in DrScheme does not come with hashtable library.. </p>
  
  <p>when I run (make-hash-table) it throws an error...</p>
  
  <p>Pretty Big has support for hashtable but does not support mutable pairs.. </p>
  
  <p>so I am stuck making one of them work for me .. </p>
  
  <p>How do I add support for hashtable in R5RS?</p>
  
  <p>thanks</p>