+"WHO #lamers". The output will consist of WHO
+listings for each user on the channel. If you are
+not on the channel, it must not have cmode +s set
+and users with umode +i are not shown.
+
+If the parameter is not a nickname or a channel, users
+with matching nickname, username, host, server or
+GECOS information are shown. The wildcards * and ?
+can be used. Users with umode +i set that are not
+on the same channel as you are not shown.
+
+A second parameter of a lowercase letter o ensures
+only IRC operators are displayed.
+
+The second parameter may also contain a format
+specification starting with a percent sign.
+This causes the output to use numeric 354,
+with the selected fields:
+
+t - Query type. Outputs the given number in each reply.
+c - Channel.
+u - Username.
+i - IP address.
+h - Host.
+s - Server.
+n - Nickname.
+f - Status.
+d - Hop count.
+l - Idle time or 0 for users on other servers.
+a - Services account name or 0 if none.
+r - GECOS information.