ontrols.
The names with pattern "*:|()" will be treated as interaction/combination
term, please make sure all column names in <code>data</code> are valid R variable names.</p></dd>


<dt>time</dt>
<dd><p>column name specifying time, default is 'time'.</p></dd>


<dt>status</dt>
<dd><p>column name specifying event status, default is 'status'.</p></dd>


<dt>merge_models</dt>
<dd><p>if 'TRUE', merge all models and keep the plot tight.</p></dd>


<dt>model_names</dt>
<dd><p>model names to show when <code>merge