YOFFSET
SET YOFFSET n GET YOFFSET { n }
YOFFSET = 0
YOFFSET is another control on the numbering for the y-axis. If |YMOD| > 1, then YOFFSET is added to the numbers to be displayed on the y-axis.
|YMOD| > 1
If |YMOD| ≤ 1, then YOFFSET is ignored.
|YMOD| ≤ 1