Users could scroll past the edge of a grid with no variable row heights by programmatically setting the grid's vertical scroll position, resulting in extra white space being visible beyond the grid edge.

Example:

MODIFY ws-grid-handle
START-X nn
START-Y nn
X = nn
Y = nn
CURSOR-X = nn
CURSOR-Y = nn
HSCROLL-POS = nn
VSCROLL-POS = nn

Full article: https://portal.microfocus.com/s/article/KM000013570