What does BASE 2.1 have that BASE 2.0 doesn't?

[Noah Chandra]

I would like to see the description of those different version subliminal. Or could anyone here tell me the differences between BASE 2.0 and BASE 2.1, please?

[Spiritman]

This from the instructions

BASE 2.1 is an upgrade from BASE 2.0, which corrects an omission in the
script. While the omission was harmless and made no difference in how safe,
effective or useful the program was, we corrected it and rebuilt the program
anyway.