Volleyball

​an action performed with a person's hand, or hands, which is intended to give a particular message to the person who sees it.

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HAND SIGNALS

​​1. Illegal Alignment/
Improper Server

​​2. Line Violation

​​3. Illegal Hit

​​4. Delay of Service

​​5. Over-the-net

​​6. Net Fault or Net Serve

​​8. Illegal Block/Screening

​​7. Illegal Attack

​​9. Ball Touched

​​12. Ball Lands Inbounds

​​11. Double Hit

​​10. Four Hits

​​13. Out-of-bounds

​​16. Authorization to Enter

​​15. Substitution

​​14. Begin Serve

​​17. Point

​​19a. Team

​​19. Time-out

​​18. Replay/Re-serve

​​19b. Official

​​22. Change of Courts

​​21. End-of-Set

​​20. Unnecessary Delay