[WaitWaitWha]

Or get of it completely? It is only used by a "narrow" sub-culture group in the USA, as far as I know.

[happytoexplain]

In language, "familiar with" is a vast superset of "used by", and only the former is required for clear writing.

[reaperducer]

It is only used by a "narrow" sub-culture group in the USA, as far as I know.

The way we learn about the world is to be exposed to "narrow" sub-culture groups in various countries.