UFT Pro (LeanFT) .NET SDK Reference, Version 14.03
NextLine Method (IScrollBar)
The number of lines to move the scroll bar (Default value: 1).
Moves the scroll bar downward, or to the right, the specified number of lines.
Syntax
void NextLine( 
   int numberOfLines
)

Parameters

numberOfLines
The number of lines to move the scroll bar (Default value: 1).