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diff --git a/doc/diagrams.doc b/doc/diagrams.doc
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@@ -52,6 +52,9 @@
class \c A has a member variable \c m_a of type class \c B, then
\c A has an arrow to \c B with \c m_a as label).
</ul>
+ <li>if \ref cfg_call_graph "CALL_GRAPH" is set to YES, a
+ graphical call graph is drawn for each function showing the
+ functions that the function directly or indirectly calls.
</ul>
The elements in the class diagrams in HTML and RTF