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YAML

key-value pairs
- quotes not required (unlike json)
normally 2 spaces for indentation
comments begin with #
strings with special characters should be enclosed in quotes (' or ")

lists

fruits:
  - Apple
  - Banana
  - Cherry

multiline strings

use either | or >
- |: preserves newlines
- >: folding (newlines are replaced by spaces)

description: |
  This is a multiline string.
  It will keep newlines intact.

description: >
  This is a folded string.
  It will replace newlines with spaces.

yaml vs json

employees:
  - name: John
    position: Manager
    department: HR
  - name: Sarah
    position: Developer
    department: IT

{
  "employees": [
    {
      "name": "John",
      "position": "Manager",
      "department": "HR"
    },
    {
      "name": "Sarah",
      "position": "Developer",
      "department": "IT"
    }
  ]
}