diff --git a/docs/utilities.htm b/docs/utilities.htm
index ca7543b8..97ccc1ff 100644
--- a/docs/utilities.htm
+++ b/docs/utilities.htm
@@ -1072,7 +1072,14 @@ summaries using the wee_database utility.</pre>
 
         <h4 class='config_option' id='csv_delimiter'>delimiter</h4>
 
-        <p>The one character string used to separate fields. Default is <span class="code">,</span> (comma).</p>
+        <p>The character used to separate fields. Default is <span class="code">,</span> (comma).</p>
+
+        <h4 class='config_option' id='csv_decimal'>decimal</h4>
+
+        <p>The character used as the decimal point in the source files. A full stop is frequently used but
+            it may be another character. This parameter must be included in quotation marks. Default
+            is <span class="code">'.'</span>.
+        </p>
 
         <h4 class='config_option' id='csv_interval'>interval</h4>