This is a special type within ThingsDB and is returned by all the *_info() functions.
As an example we can take the node_info and view the type. This will tell us that the value is indeed of the info type.
// get the current node info
node_info = node_info();
// return the type as string to verify this is indeed the `info` type
type(node_info);
Return value in JSON format
"info"