Space separated by a colon
The number of spaces in a property is key in YAML
Dictionary/Map Banana: Calories: 105 Far: 0.4g Carbs: 27 g
Fruit: Apple Vegetable: Carrot Meat: Chicken
When to use a dictionary, and when to use a list?
Dictionary is an unordered list, meaning the order of the properties does not matter
Lists are ordered collections, so the order of items matter
Any line beginning with a hash # is a comment