yaml format

YAML is a markup language with many powerful features

Rule 1:

YAML uses a fixed indentation scheme to represent relationships between data layers. 

Each level consists of exactly two spaces. DO NOT USE TABS.

Rule 2:

colons:

key value pair using colon.

my_key: my_value

my_key:

  my_value

Rule 3:

Dashes

list of items

- list_value_one

- list_value_two

- list_value_three

For existing files, You can convert tabs to 2 spaces by these commands in Vim::set tabstop=2 expandtab and then :retab.

The suggested syntax for YAML files is to use 2 spaces for indentation,

https://docs.saltstack.com/en/latest/topics/yaml/index.html

source: https://docs.saltstack.com/en/latest/topics/yaml/index.html