One more thing: Is `Nothing?` a valid/proper way t...

# getting-started

[Joshua Hansen]

One more thing: Is Nothing? a valid/proper way to indicate that something only can be null?

[Youssef Shoaib [MOD]]

It is a type inhabited only by null, so yes it is apt. However, I'd probably usually use Unit unless I need null-ness for a specific, identifiable reason.