| B | Marks the user as a Bot. |
| c | Requires other users to be in a channel with the user before being able to PRIVMSG/NOTICE them. |
| d | Makes the user stop receiving channel PRIVMSGs/NOTICEs. |
| g | Provides control over who can private-message a user via /ACCEPT lists. |
| G | Censors PRIVMSGs and NOTICEs |
| h | Marks the user as available for helping others. |
| H | Hides an Oper’s Oper status. |
| I | Hides all channels a user is a member of in /WHOIS |
| k | The client is a God. Client cannot be kicked or set -qaohv. |
| r | Marks a user as “registered and identified” from Services. |
| R | User can only receive PRIVMSGs from registered (+r) users. |
| S | Strips control codes from messages to the user. (In Private Message/Notice) |
| W | The user is shown when they are /WHOIS’d. |
| x | Masks a users hostname. Disallows others from getting your IP address. |
