Blood of Dragons is the only author-approved MUSH based on George R.R. Martin's A Song of Ice and Fire. Play the Game of Thrones and become a part of the history of the Seven Kingdoms:
The +prefs information is technically more about the player than the character, but it is recommended (but not mandatory) that players set this up during CharGen even so. In particular, the Comment is good to have set.
See +HELP +PREFS for how to set this information up.
The Westeros network consists of several different sites, including a forum and a wiki, for all your A Song of Ice and Fire needs.