ing indicating a given term in the model. All
factors in the term must be included in the model, even if they are in the
model data frame.</p></dd>


<dt id="arg-label-factors">label.factors<a class="anchor" aria-label="anchor" href="#arg-label-factors"></a></dt>
<dd><p>If true, the rownames for each row in the result
include the name(s) of the factor(s) involved, followed by the
level values. Otherwise, the rownames include only the levels of
the factor(s), with multiple factors separated by ':'</p></dd>

