Registration to an official college or association of architects is completely optional.

If you want to donate, that's fine, that's completely optional.

But she added, "Our national headquarters made it clear to us that using Laerdal was completely optional."

These modifiers are completely optional as they have no impact on points gained.

Enemies can also be avoided in addition to being shot at; making the fantasy violence component in the game completely optional.

Occasionally, a bit of fresh meat or fish is added, and I've taken the liberty of doing that in this instance, though it's completely optional.

It is completely optional for you to participate in these programs.

Not every couple has an engagement party, and it's completely optional.

So one of the things that's very simple that we offer, it's completely optional for users, is self-service password recovery.

It is a very limited benefit that is completely optional for Medicare beneficiaries.