jabber-roster-sort-functions controls how roster items are
sorted. By default, contacts are sorted first by presence, and then
alphabetically by displayed name.
jabber-sort-order controls how roster items are sorted by
presence. It is a list containing strings corresponding to show
status (see Presence) or
nil, which represents offline.
jabber-show-resources controls when your contacts' resources
are shown in the roster buffer. The default is to show resources when
a contact has more than one connected resource.
jabber-roster-line-format specifies how the entry for each
contact looks. It is a string where some characters are special if
preceded by a percent sign:
jabber-roster-show-title controls whether to show a "Jabber
roster" string at the top of the roster buffer. You need to run
M-x jabber-display-roster after changing this variable to update
%u is replaced by one of the strings given by
jabber-resource-line-format is nearly identical, except that
the values correspond to the values of the resource in question, and
%p escape is available, which inserts the priority of
jabber-roster-buffer specifies the name of the roster buffer.
If you change this, the new name will be used the next time the roster
jabber-roster-show-bindings controls whether to show a list of
keybindings at the top of the roster buffer. You need to run M-x
jabber-display-roster after changing this variable to update the display.