title: Graphviz bold font attribute
body: <p>I would like to change font attribute as the example below </p>
  
  <p><img src="https://i.stack.imgur.com/GihUs.png" alt="example"></p>
  
  <p>Is there any way to change the font of just few words inside a <code>label</code> instead of using the global attribute change <code>fontname="times bold italic"</code> ? I need to convert to png. </p>