l result in the solver stopping when
it has found a solution within 1% of optimality.
Additionally, a value of 0 will result in the solver stopping
when it has found an optimal solution.
The default value is 0.1 (i.e. 10% from optimality).</p></dd>


<dt>presolve</dt>
<dd><p><code>logical</code> indicating if attempts to should be made
to simplify the optimization problem (<code>TRUE</code>) or not (<code>FALSE</code>).
Defaults to <code>TRUE</code>.</p></dd>


<dt>verbose</dt>
<dd><p><code>logical</code> s