diff --git a/www/command-line-options.html b/www/command-line-options.html
index 3ea320c..8612877 100644
--- a/www/command-line-options.html
+++ b/www/command-line-options.html
@@ -4938,8 +4938,14 @@
<h4><a name="selective-blur" id="selective-blur"></a>-selective-blur <em class="arg">geometry</em></h4>
</div>
+<div style="margin: auto;">
+ <h4><a name="selective-blur" id="selective-blur"></a>-selective-blur <em class="arg">radius</em><br />-unsharp <em class="arg">radius</em>x<em class="arg">sigma</em>{<em class="arg">+threshold</em>}</h4>
+</div>
+
<table style='background-color:#FFFFE0; margin-left:40px; margin-right:40px; width:88%'><tr><td style='width:75%'>Selectively blur pixels within a contrast threshold.</td><td style='text-align:right;'></td></tr></table>
+<p>Blurs those pixels that are less than or equal to the threshold in contrast. The threshold may be expressed as a fraction of <em class="QR">QuantumRange</em> or as a percentage.</p>
+
<div style="margin: auto;">
<h4><a name="separate" id="separate"></a>-separate</h4>
</div>