B# has some special libraries fully* defined in script, utilizing all of Core B# to do neat things.
For example
DECK_: Used to drawn and set B# decks (this is a special case and is not *fully* scripted)- [DEPRECATED]
RALLYMAN_: Used to group and dispatch units. aaaa_ai_helpers.js: Supersedes above, and unfortunately doesn’t have a prefix. Used to interface with base AI.