Avago Technologies LSI53C1010 - Manual (Page 198)

8-12 Writing Device Drivers with SCRIPTS
also be used with the alternate address field of Select, Reselect, Wait
Select, and Wait Reselect instructions.
Note: Use the REL qualifier keyword in the SCRIPTS instructions
to specify relative addressing. RELATIVE is a declarative
keyword, used by the SCRIPTS assembler, to establish
relative buffers. These relative buffers are not used in
connection with relative addressing.