Usermodes: (* designates that the umode is oper only)
USERMODE DESCRIPTION
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+o - Designates this client is an IRC Operator. Use the /oper command to attain this.
+i - Designates this client 'invisible'.
* +w - Can see server wallops.
* +z - Can see oper wallops.
* +l - Can see oper locops (local wallops).
* +s - Can see generic server messages and oper kills.
* +c - Can see client connections and exits.
* +u - Can see unauthorized client connections.
* +j - Can see 'rejected' client notices.
* +k - Can see server kill messages.
* +f - Can see 'I-line is full' notices.
* +y - Can see stats/links/admin requests to name a few.
* +d - Can see server debug messages.
* +n - Can see client nick changes.
* +X - Can see new server introduction and split messages.
* +b - Can see possible bot / join flood warnings.
* +a - Is marked as a server admin in stats p/o.
* +N - Is marked as a network administrator
* +C - Can see extended client connections and exits.
+p - Hides the output of channels this client is in from WHOIS to non-admins.
+D - "deaf": don't receive channel messages
+G - "soft caller id": block private messages from people not on any common channels with you (unless they are /accept'ed)
+g - "caller id" mode: only allow /accept clients to message you
+x - "cloaked": this client's hostname has been 'cloaked'.
+r - Designates this client as having identified to its nickname.
+R - "RegOnly": this client will only accept private messages from clients who have identified to their nickname.
+S - Designates this client as having connected via SSL.
+W - Designates this client as having connected via CGI:IRC.