For CMI the RMSC block was invented to hold the code (scripts etc.) which was previously stored in ROOM.

"RMSC"	dword	Block identifier
dwSize	dword	Size in bytes (BE)
blENCD	block	ENCD block.
blEXCD	block	EXCD block.
loop
blLSCR	block	LSCR block
end of loop
loop
blOBCD	block	OBCD block
end of loop