n1

    A number from 0 to 3 that specifies one of the following
    arrangements of running head information:

    .LAYOUT 0   Restores the standard arrangement of title and
                subtitle in the upper left of a page, and page number
                and date in the upper right.
    .LAYOUT 1   Titles and subtitles are centered at the tops of
                pages. Page numbers are centered at the bottom. No
                date is output.
    .LAYOUT 2   Titles and subtitles appear at the top right of
                right-hand (odd-numbered) pages and at the top left
                of left-hand (even-numbered) pages. Page numbers are
                centered at the bottom. No date is output.
    .LAYOUT 3   Gives the standard page arrangement for title and
                subtitle (as in .LAYOUT 0), but with the addition
                of running-page numbers centered at the bottom of
                pages between two hyphens (for example, - 23 -).
                Running-page numbers are consecutive through the
                entire document rather than within chapters; they
                are not affected by the .NO NUMBER or .NUMBER PAGE
                commands. (See also .NUMBER RUNNING.)

 n2

    Specifies how many lines below the last line of text on a page
    the number will appear. You must specify n2 if n1 is 1, 2, or 3.
    If n1 is 0, you cannot specify a value for n2.