The term 'homeworld' refers to one of the 6 worlds of the Retroverse
 that your race is native to.  Each world provides its native races
 with special boons in the form of skill and spell bonuses.  These
 bonuses can only be exploited when a member of that race is currently
 on their homeworld.  In leaving their native world, Gifted Ones lose
 these bonuses.  To find out what world your race is native to, check
 'help race' and also the help files for the 6 different worlds: help
 sosel, help raji, help welstar, help wysoom, help crypt, help perdow.