Chapter 3 - Races
See HHB|Ch 2. Races for a list of the base Races available. Here we discuss making custom races.
Base Races
Maybe you want elves to have a different racial aptitude than FOCUS, or orcs to have STAMINA instead of ATHLETE. That's easy to do in the world builder, by simply naming your race "elf" (or any modifier added to "elf", such as "moon" or "sun" or "wood" etc.) or any of the other base races and add your own racial aptitude.