diff --git a/doc/ref/zbarcam.xml b/doc/ref/zbarcam.xml
--- a/doc/ref/zbarcam.xml
+++ b/doc/ref/zbarcam.xml
@@ -127,6 +127,25 @@
         </listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><option>--no-probe</option></term>
+        <listitem>
+          <simpara>VfW (Video for Windows) only flag.
+          Instead of probing all known formats,
+          the current format is used. Speeds up processor startup.
+          </simpara>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--vfw-dlg-all, --vfw-dlg-source, --vfw-dlg-format, --vfw-dlg-display</option></term>
+        <listitem>
+          <simpara>Enable VfW dialogs, providing graphical interface
+          for camera configuration.
+          </simpara>
+        </listitem>
+      </varlistentry>
+        
     </variablelist>
   </refsection>
 
