 href="https://lrberge.github.io/fixest/reference/feols.html" class="external-link">feols</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="va">mpg</span>, <span class="va">hp</span><span class="op">)</span> <span class="op">~</span> <span class="va">disp</span> <span class="op">+</span> <span class="fu"><a href="https://lrberge.github.io/fixest/reference/stepwise.html" class="external-link">csw