Describe the property, propertyMap convention

[evanp]

In section 4.7:

In the serialized JSON, these two forms are differentiated using a simple property naming convention, for instance: "name" identifies the JSON string form for the name property while "nameMap" represents the object form.

If the convention is simple, we should be able to describe it, without resorting to an example.

[evanp]

Sometimes an example is the best way to describe something, though. I think the fact that there are only 3 means we could just enumerate these, too.

[trwnh]

This should be discussed in the same section as natural language tagging.