Further documentation for notation.

[helm.git] / helm / software / matita / help / C / sec_terms.xml

diff --git a/helm/software/matita/help/C/sec_terms.xml b/helm/software/matita/help/C/sec_terms.xml
index 082a5bb75f47b79d26820ac30506c11ceeb7abdd..287267bd6285941bd5436a53c2de6b4bddf66c97 100644 (file)
--- a/helm/software/matita/help/C/sec_terms.xml
+++ b/helm/software/matita/help/C/sec_terms.xml
@@ -109,7 +109,19 @@
        </row>
       </tbody>
       </tgroup>
-     </table>
+    </table>
+    <table frame="topbot" rowsep="0" colsep="0" role="grammar">
+      <title>symbol</title>
+      <tgroup cols="4">
+      <tbody>
+       <row>
+        <entry id="grammar.symbol">&symbol;</entry>
+        <entry>::=</entry>
+        <entry><emphasis role="bold">〈〈None of the above〉〉</emphasis></entry>
+       </row>
+      </tbody>
+      </tgroup>
+    </table>
   </sect2>
   <sect2 id="terms">
   <title>Terms</title>