A subrace represents a branch of a race, typically one that exhibits slight differences in appearance, outlook, and adaptation compared to other members of the race. The implementation of these in Neverwinter Nights is left open to the community. The differences in appearance can usually be achieved by a player during character creation, while differences in outlook can be roleplayed. Differences in adaptation often means a different set of racial modifiers or racial feats, and these will only be effective if specifically implemented by a module. (Of the BioWare releases, only the premium module Witch's Wake implements subraces.)