Yaml

• Yaml ain't markup language
• extn can be either yaml or yml
• Human readable & intuitive
• writing Configuration 
• Searialization language - 
• Data structure
• Line separation & spaces with indentation 
• Key value pair
• separated by :
• comments start with #
• Object
• indent the value pair and close in Object name
• lists
• - on the first child attribute for every list element(for objects)
  
• [] can be used for primitive types
• | for multi line string
• env variables
  
•  $<variable name>
• Place holders
• {{ }}
• values will be replaced with template generator
• multiple yaml documents
• ---   to separate