From @DennisKehrig's comment in the original pull request https://github.com/adobe/brackets/pull/2844#discussion_r3169153, he proposes hypothetical jQuery events on a language. If the language has a dot, it's treated as a namespace, e.g.

```
$(LanguageManager).on("myLanguageId.myNamespace")
```

He makes a few other points about restricting the use of a dot. I think capital letters should be ok though. I'll add that.