MF Digital DIRECTOR Series (Rev: 06/01/02) - Manual (Page 104)

DIRECTOR Series Operator’s Guide Document Revision: 0802
Page 103
; bytes, rounded up to nearest 2048 byte increment. offset=0 and length
; 5000 would corrupt starting from byte 1 to 6144 of the "dummy.bin"
; file. File length must be greater than the defect length.
;
; Notes: dummy.bin would be in the "\". The path is relative to the disc
; image of the CD, not the source path. Can also be used with .ISO
; files.