="op">~</span> <span class="va">Days</span> <span class="op">+</span> <span class="op">(</span><span class="va">Days</span> <span class="op">|</span> <span class="va">Subject</span><span class="op">)</span>, <span class="va">sleepstudy</span><span class="op">)</span></span>
<span class="r-in">    <span class="op">}</span></span>
<span class="r-in">    <span class="co">## load stored object</span></span>
<span class="r-in">    <span class="va">L</span> <span class="op">&lt;-</span> <span class="fu"><a href="