Nicknames contain a variety of properties, some read-only, others read-write. Some duplication of functionality is present, in that PROP commands can be used to change certain attributes that were previously only changeable by commands.
Possible nick properties are:
AGE, AIM, AUTHBUDDY, AUTHCHAN, AUTOPLOG, AVATAR, AWAY, AWAYTIME,
CAPAB, CONNECTTIME, CONTENT, EMAIL, ENCRYPTION, FREEZEBY, FREEZETIME, FROZEN,
FTRANSFER, GUID, ICQ, LANGUAGE, LUID, MAILBLOCK, MARKED, MARKEDBY,
MARKEDTIME, MFORWARD, MRECEIPTS, MSN, NAME, NICKTIME, NOMEMO, NOOP,
OPT, PMREPTRACK, REALNAME, REGISTERED, SHOWAGE, SHOWEMAIL, THEME, URL,
For more information type /hs prop nick <property>
/hs prop nick away /hs prop nick nomemo
See also UPROP for a more convenient way to change your own properties.