><a href="#cb1-5" aria-hidden="true" tabindex="-1"></a><span class="cf">if</span> (<span class="sc">!</span><span class="fu">require</span>(devtools)) <span class="fu">install.packages</span>(<span class="st">&#39;devtools&#39;</span>)</span>
<span id="cb1-6"><a href="#cb1-6" aria-hidden="true" tabindex="-1"></a><span class="cf">if</span> (<span class="sc">!</span><span class="fu">require</span>(GetFREData)) devtools<span class="sc">::</span><span class="fu">install_github</span>(<span class="st">&#39;msper