I was at Cisco Live in Berlin last week, and I came away with a question: why no YANG?
Here is a YANG model represented in YIN—this one describes an interface in Quagga, and is easy to read:
YANG can be expressed in many ways, such as YIN, or in a model format (which is still easy to read), or in json format. This is an example of HTML, taken from the Vimeo site:
The YIN representation of YANG is XML, and XML is also a superset of HTML.