<li><strong>Numeric</strong> - specify a threshold above, equal
to or below which a feature will be selected or ignored.</li>
<li><strong>String</strong> - select or ignore features based on
<li><strong>Numeric</strong> - specify a threshold above, equal
to or below which a feature will be selected or ignored.</li>
<li><strong>String</strong> - select or ignore features based on