gistfile1.txt

                RSRESET
Window_Next     RS.L    1 ; offset 0
Window_LeftEdge RS.W    1 ; offset 4
..
Window_SIZEOF   RS.B    0

                move.w  #4,d7                      ; 4 windows to process
                lea     Window,a0
.loop
                move.w  Window_LeftEdge(a0),d0
                ...
                lea     Window_SIZEOF(a0),a0       ; Get next window
                subq    #1,d7
                bne.s   .loop