prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  docs
   +--dsl
   |   +--docbook
   |   |   `--model
   |   +--links
   |   `--source
   |       `--model
   `--model
  ```
  
  Convert this description:
  
  unit is a principal directory that organizes 2 subdirectories: features and modules.
  At the main level, 'features' includes 7 different nested folders.
  At level 2, in directory path 'features → component', The 'component' repository is a vacant space.
  At level 2, in directory path 'features → directives', Inside 'directives', you'll find it is barren.
  Within directory hierarchy 'features > filter', Inside 'filter', you'll find it has no folders inside.
  At level 2, in directory path 'features → global-api', Inside 'global-api', you'll find it is vacant.
  In nested path 'features / instance', The 'instance' folder remains unused.
  In nested path 'features / options', 'options' has nothing inside.
  At level 2, in directory path 'features → v3', 'v3' bundles 1 child directories: reactivity.
  Within directory hierarchy 'features > v3 > reactivity', Inside 'reactivity', you'll find it is an empty container.
  Back to the top level.
  At the top level, 'modules' incorporates 5 some subdirectory elements.
  At level 2, in directory path 'modules > compiler', The 'compiler' data structure hasn't been filled with any content.
  Within directory hierarchy 'modules > observer', Inside 'observer', you'll find it has been left empty.
  Within directory hierarchy 'modules > server-compiler', Inside 'server-compiler', you'll find it is empty.
  Within directory hierarchy 'modules / util', Inside 'util', you'll find it remains unused.
  At level 2, in directory path 'modules > vdom', 'vdom' includes 2 folders: modules, patch.
  At level 3, in directory path 'modules > vdom > modules', 'modules' is barren.
  In nested path 'modules > vdom > patch', Inside 'patch', you'll find it is blank.
  Back to the top level.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "unit\n +--features\n |   +--component\n |   +--directives\n |   +--filter\n |   +--global-api\n |   +--instance\n |   +--options\n |   `--v3\n |       `--reactivity\n `--modules\n     +--compiler\n     +--observer\n     +--server-compiler\n     +--util\n     `--vdom\n         +--modules\n         `--patch", "description": "unit is a principal directory that organizes 2 subdirectories: features and modules.\nAt the main level, 'features' includes 7 different nested folders.\nAt level 2, in directory path 'features \u2192 component', The 'component' repository is a vacant space.\nAt level 2, in directory path 'features \u2192 directives', Inside 'directives', you'll find it is barren.\nWithin directory hierarchy 'features > filter', Inside 'filter', you'll find it has no folders inside.\nAt level 2, in directory path 'features \u2192 global-api', Inside 'global-api', you'll find it is vacant.\nIn nested path 'features / instance', The 'instance' folder remains unused.\nIn nested path 'features / options', 'options' has nothing inside.\nAt level 2, in directory path 'features \u2192 v3', 'v3' bundles 1 child directories: reactivity.\nWithin directory hierarchy 'features > v3 > reactivity', Inside 'reactivity', you'll find it is an empty container.\nBack to the top level.\nAt the top level, 'modules' incorporates 5 some subdirectory elements.\nAt level 2, in directory path 'modules > compiler', The 'compiler' data structure hasn't been filled with any content.\nWithin directory hierarchy 'modules > observer', Inside 'observer', you'll find it has been left empty.\nWithin directory hierarchy 'modules > server-compiler', Inside 'server-compiler', you'll find it is empty.\nWithin directory hierarchy 'modules / util', Inside 'util', you'll find it remains unused.\nAt level 2, in directory path 'modules > vdom', 'vdom' includes 2 folders: modules, patch.\nAt level 3, in directory path 'modules > vdom > modules', 'modules' is barren.\nIn nested path 'modules > vdom > patch', Inside 'patch', you'll find it is blank.\nBack to the top level.\n"}