optional

It said it intended to “vigorously defend” itself and claimed none of the allegations in the lawsuit, if proven, would prevent the app from charging the fees or “optional tips,” but instead were about issues around “consumer disclosures and consent.”

He’ll skip the optional Sunday lift at USC, setting aside football in favor of something else entirely.

This doesn’t appear optional—if you record, the other people on the line will be notified.

"School is not optional. Every child has the right to access quality education and parents have a legal duty to ensure regular attendance."

Participating in GameFace ID is optional.