projected"</code>, <code>"regressors"</code>, or <code>"instruments"</code>;
for <code><a href="https://rdrr.io/r/stats/formula.html" class="external-link">formula</a></code>, <code>"regressors"</code>, <code>"instruments"</code>,  or <code>"complete"</code>;
for <code><a href="https://rdrr.io/r/stats/coef.html" class="external-link">coef</a></code> and <code><a href="https://rdrr.io/r/stats/vcov.html" class="external-link">vcov</a></code>, <code>"stage2"</code> or <code>"stage1"</code>.</p></dd>


<dt>comp