="-1"></a>alpha_cov_form <span class="ot">&lt;-</span> <span class="st">&quot;none&quot;</span></span>
<span id="cb1-24"><a href="#cb1-24" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-25"><a href="#cb1-25" aria-hidden="true" tabindex="-1"></a><span class="co"># no fixed terms, i.e. we fit both lambdas and alphas</span></span>
<span id="cb1-26"><a href="#cb1-26" aria-hidden="true" tabindex="-1"></a>fixed_terms <span class="ot">&lt;-</span> <span class="cn">NULL</span></span>
<span id="cb1-27"><