ad of a covariance matrix
be estimated?</p></dd>

  <dt>max.increment</dt>
<dd><p>Maximum increment</p></dd>

  <dt>increment.factor</dt>
<dd><p>A value (larger than one) which defines the extent of the decrease of the maximum
increment of item parameters in every iteration. The maximum increment in iteration
<code>iter</code> is defined as <code>max.increment*increment.factor^(-iter)</code>
where <code>max.increment=1</code>. Using a value larger than 1 helps
to reach convergence in some non-converging ana