Exactly. Though that would mean keeping the already existing references... though they could be aliased. 
```
{
    "ECMASCRIPT": {
        "versions": {
            "5.1": {
                 "aliasOf": "ECMA-262"
            },
            "3": {
                 ???
            }
        }
    },
    "ECMA-262-51": {
        "aliasOf": "ECMASCRIPT-5.1"
    }
}

```