prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  [lang]
   +--@modal
   |   +--(.)feed
   |   `--(.)photos
   |       `--[id]
   +--feed
   `--photos
       `--[id]
  ```
  
  Convert this description:
  
  packages is a main directory that contains 2 subdirectories: app and library.
  In the root directory, 'app' groups 1 subdirectories that organize the source code.
  Within directory hierarchy 'app > node_modules', 'node_modules' has nothing inside.
  At the main level, 'library' groups 2 child directories: node_modules, src.
  Within directory hierarchy 'library / node_modules', 'node_modules' contains nothing at present.
  At level 2, in directory path 'library > src', Inside 'src', you'll find it is devoid of content.
  Back to the top level.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "packages\n +--app\n |   `--node_modules\n `--library\n     +--node_modules\n     `--src", "description": "packages is a main directory that contains 2 subdirectories: app and library.\nIn the root directory, 'app' groups 1 subdirectories that organize the source code.\nWithin directory hierarchy 'app > node_modules', 'node_modules' has nothing inside.\nAt the main level, 'library' groups 2 child directories: node_modules, src.\nWithin directory hierarchy 'library / node_modules', 'node_modules' contains nothing at present.\nAt level 2, in directory path 'library > src', Inside 'src', you'll find it is devoid of content.\nBack to the top level.\n"}