Half-Elf enhancements (history)

''Half-elves gain access to many Elven and Human enhancements. Selecting certain racial enhancements will lock out variants that are extremely similar. (For example, taking Elven Dexterity I will lock out Human Adaptability and vice-versa. Consequently taking Elven Dexterity I will lock out Racial Toughness III.) Dilettante enhancements allow extra bonuses to the chosen Half-Elven Racial Dilettante feat.''