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:
  
  linkReference is a primary directory that encompasses 2 subdirectories: __snapshots__ and case-and-space.
  At the main level, '__snapshots__' appears to be unused.
  At the main level, 'case-and-space' organizes 1 nested folders: __snapshots__.
  Within directory hierarchy 'case-and-space / __snapshots__', '__snapshots__' holds no subdirectories at the moment.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "linkReference\n +--__snapshots__\n `--case-and-space\n     `--__snapshots__", "description": "linkReference is a primary directory that encompasses 2 subdirectories: __snapshots__ and case-and-space.\nAt the main level, '__snapshots__' appears to be unused.\nAt the main level, 'case-and-space' organizes 1 nested folders: __snapshots__.\nWithin directory hierarchy 'case-and-space / __snapshots__', '__snapshots__' holds no subdirectories at the moment.\n"}