right= see description
[This control collides with save cursor [variant]]
Set Left and Right Margin
right is not specified, 0 or bigger than the number of the right-most column, it is adjusted to the number of the right-most column.
left is right of the right-most column, adjust it to the right-most column.
right set the left and right column of the scroll region according to
right and move the cursor to the top-left cell of the display (when in cursor origin mode is set to the top-left cell of the scroll region).