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+# YAML Cheat Sheet
+
+### YAML example
+
+```yaml
+# Comments in YAML look like this
+
+key: value
+another_key: Another value goes here.
+a_number_value: 100
+
+# Nesting uses indentation. 2 space indent is preferred (but not required).
+a_nested_map:
+  key: value
+  another_key: Another Value
+  another_nested_map:
+    hello: hello
+
+# Sequences (equivalent to lists or arrays) look like this
+# (note that the '-' counts as indentation):
+a_sequence:
+  - Item 1
+  - Item 2
+
+# Since YAML is a superset of JSON, you can also write JSON-style maps and sequences:
+json_map: {"key": "value"}
+json_seq: [3, 2, 1, "takeoff"]
+```
+
+Checking YAML files' formatting can be done using `yamllint`