Sentence examples for useful but optional from inspiring English sources

Angus King, the Maine independent, urged the intelligence chiefs to make a thorough case that the bulk collection of domestic phone data was necessary for preventing terrorism, rather than a useful but optional tool – as the latter, King said, was difficult to defend to constituents.

The association, which is part of a coalition of consumer groups opposed to forced arbitration, argues that alternative dispute resolution formats like arbitration can be useful — but only if they are optional.

Wearing knee pads, elbow guards and wrist guards, although completely optional, can be useful, but only if they don't limit your movements.

"The Afghan war," Mr. Patten wrote, has "perhaps reinforced some dangerous instincts: that the projection of military power is the only basis of true security; that the U.S. can rely on no one but itself; and that allies may be useful as optional extras".

The rest is good too, but optional.

Suan is obligatory in i but optional in 13.

Flannel shirts were encouraged, but optional.

It is important, but optional.

Women highlighted that it was not compulsory but optional.

(Recommended but optional).

Useful: but, sadly, also impossible.