Used to seek approval of a suggestion and imply that you're open to other ideas.

Suggestion Agreement

Implies that the action is up for discussion and not finalized.

Action Confirmation

Proposes a solution to a problem, expecting feedback or agreement.

Expresses that you did not fully understand and invites repetition or explanation.

Used when something unexpected is said and you're seeking confirmation.

In cricket, it's a loud call to the umpire questioning a player's dismissal.

Remember it's widely recognized in cricket-playing Commonwealth countries, not elsewhere.