 and a response
  module of a class that inherits from class
  <code><a href="lmResp-class.html">lmResp</a></code>.  A model with a
  <code><a href="lmResp-class.html">lmerResp</a></code> response has class <code>lmerMod</code>; a
  <code><a href="lmResp-class.html">glmResp</a></code> response has class <code>glmerMod</code>; and a
  <code><a href="lmResp-class.html">nlsResp</a></code> response has class <code>nlmerMod</code>.</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a c