The JSON specification has six structural characters (‘[’, ‘{’, ‘]’, ‘}’, ‘:’, ‘,’) to delimit the location and structure of objects and arrays.

Wouldn’t a quote “ also be a structural character? It doesn’t actually represent data, it just delimits the beginning and end of a string.

I get why I’m probably wrong: a string isn’t a structure of chars because that’s not a type in json. The above six are the pieces of the two collections in JSON.