--- a/doc/help/general.html
+++ b/doc/help/general.html
@@ -851,6 +851,10 @@
       <td> +10 dB Booster </td>
     </tr>
     <tr>
+      <td> F12 </td>
+      <td> FullScreen </td>
+    </tr>
+    <tr>
       <td> A </td>
       <td> Open the Analog Interface Window </td>
     </tr>