Moves the cursor down a specified number of lines.
document.selection.LineDown( [ bExtend [, nCount ] ] );
document.selection.LineDown [ bExtend [, nCount ] ]
Optional. Specifies whether the moved text is collapsed or not. The default is false and the moved text is collapsed.
Optional. Specifies the number of lines to move down. The default is 1. If negative, the method acts like the LineUp Method. If 0, the method acts like 1.
Supported on EmEditor Professional Version 4.00 or later.