Because module members are usually used with a namespace, short and simple names are usually the most readable option. But those names might not make sense outside the module they’re defined in, so @forward has the option of adding an extra prefix to all the members it forwards.

Internal Sass features have also moved into the module system, so we have complete control over the global namespace.

Authors of third-party tools should prefix each label key with the reverse DNS notation of a domain they own, such as com.example.some-label.