Register key - Wikipedia
The register key is a key on the clarinet that is used to play in the second register; that is, it raises the pitch of most first-register notes by a ...
Register with Course Key - OLI-CMU
Register with a Course Key. Enter your Course Key. Then you'll sign in if you have an OLI account, or create a new one. Course Key:.
Key registration - Glossary | CSRC
A function in the lifecycle of a cryptographic key; the process of officially recording the keying material by a registration authority. Source(s):