Bukkit

Here is list of all available variables:

Join message:
  -player - display name
  -realname - name
Quit message:
  -player - display name
  -realname - name
Kick message:
  -player - display name
  -realname - name
  -reason - kick reason
Death message:
  -player - display name
  -entity - entity which killed player
Hooks:
  Player hook:
    -name - display name
    -realname - name
  Factions hook:
    -tag - faction tag
    -name - faction name
    -title - player title
  SimpleClans hook:
    -name - clan name
    -tag - clan tag
  Vault hook prefix:
    -tag - prefix
  Vault hook suffix:
    -tag - suffix
  SimplePrefix hook prefix:
    -tag - prefix
  SimplePrefix hook suffix:
    -tag - suffix
  Multiverse hook:
    -name - world name