| `CVR` | N | Y | N | [MSNP2](versions/msnp2.md) | [MSNP8](versions/msnp8.md) (parameter 8) |
| `CVQ` | N | Y | N | [CVR0](versions/cvr0.md) | [MSNP8](versions/msnp8.md) (parameter 8) |
| `USR` | N | Y | N | [MSNP2](versions/msnp2.md) | [MSNP3](versions/msnp3.md) (removed CTP), [MSNP6](versions/msnp7.md) (added verified bit to OK), [MSNP8](versions/msnp8.md) (TWN auth, removed MD5 auth, added unknown bit to OK), [MSNP10](versions/msnp10.md) (removed current display name in favor of PRP MFN), [MSNP15](versions/msnp15.md) (SSO auth) |
| [`XFR`](commands/xfr.md) | N | Y | Y?| [MSNP2](versions/msnp2.md) | [MSNP3](versions/msnp3.md) (parameter 3), [MSNP7](versions/msnp7.md) (parameter 4) |
| [`OUT`](commands/out.md) | N | Y | Y | [MSNP2](versions/msnp2.md) | [MSNP10](versions/msnp10.md) (MIG and TOU disconnect reasons added), [MSNP11](versions/msnp11.md) (RCT reason added with parameter for amount of minutes until attempted reconnect.) |