title: Show multilayer function relationship by cscope in vim
body: <p>I know source insight can show multilayer function relationship in one window.</p>
  
  <p>For example, we have four functions as below</p>
  
  <pre><code>void example_A()
  {
      example_B();
  }
  
  void example_B()
  {
      example_C();
  }
  
  void example_C()
  {
      example_D();
  }
  
  void example_D();
  {
      return 5;
  }
  </code></pre>
  
  <p>When I click <code>example_D()</code> in source insight, source insight show <code>example_C()</code> is calling the function.</p>
  
  <p>Moreover, when I click <code>example_C()</code>, I see <code>example_B()</code> is calling the function.</p>
  
  <p>The relationship is like this:</p>
  
  <pre><code>Example_D()
     |
     --&gt;Example_C()
           |
           --&gt;Example_B()
                 |
                 --&gt;Example_A()
  </code></pre>
  
  <p>Could I see the relationship in one window by using cscope in vim?</p>
  
  <p>Thank you.</p>