Search for Alias in the Help. They are mentioned in several places, viz:

Style Aliases
You can create an alias so that when Band-in-a-Box looks for a style, it will load its alias instead, so when you have found a new favorite style just change the alias and you don’t have to change all of your songs. Aliases are stored in files called *.ALI. The DEFAULT.ALI is "no aliases."

BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones