I think you mean to delete the first sentence of this paragraph. 

Furthermore, I'm not sure that "create" is the correct verb here. 

Maybe, it'd be best to combine these section so that: 

    h2: "Generate Test Data with a <foo> Function"
      text: "use case/introduction" 
    h3: "<foo> Definition"
      text: "example"
    h3: "Use <foo>"
      text: 
        - To make <foo> available for use either insert it into your .mongorc.js file or copy and paste the function definition into your current shell session.
        - To use foo, you must specify <argumens> as in the following example. <example block>.