%p Process mark (char)
%O Moderated group (string, \"(m)\" or \"\")
%P Topic indentation (string)
-%m Whether there is new(ish) mails in the group (char, \"%\")
-%w Number of new(ish) mail in the group (integer)
+%m Whether there is new(ish) mail in the group (char, \"%\")
+%w Number of new(ish) mails in the group (integer)
%l Whether there are GroupLens predictions for this group (string)
%n Select from where (string)
%z A string that look like `<%s:%n>' if a foreign select method is used