{
  "languages": {
    "C++": "cplusplus",
    "C#": "csharp",
    "Java": "java",
    "Python": "python",
    "Scala": "scala"
  },
  "structures": {
    "Control Structures": "control_structures.json",
    "Data Types": "data_types.json",
    "Functions/Methods": "functions.json"
  }
}

{
  "languages": {
    "C++": "cplusplus",
    "C#": "csharp",
    "Java": "java",
    "Python": "python",
    "Scala": "scala"
  },
  "structures": {
    "Control Structures": "control_structures.json",
    "Data Types": "data_types.json",
    "Functions/Methods/Subroutines": "functions.json"
  }
}

Add subroutines to structures part of meta_data.json
Add subroutines to structures part of meta_data.json
