n

    The number of .SPACING lines you want inserted. For example, if
    you have specified a .SPACING value of two lines and you enter
    .SKIP without an n value, DSR will insert two blank lines (the
    .SPACING value). If you enter .SKIP 2, DSR will insert four blank
    lines (2 times the .SPACING value), and so on.

 -n

    Specifies that the next line of text be pushed to within n lines
    of the bottom of the current page by the insertion of blank
    lines. Every line but the last one retains the line spacing
    (.SPACING value) that follows it.