Emu XL-7 & MP-7 User's Group

I need some help with some acronyms.  I know that this will not make 
my beat making any better, but I hope it will help me understand the 
unit better.  So any help would be great.

here it goes:

BTS = 
MSB = 
LSB = 

I guess that is for now, I may have more later on.

thank you in advance.