The LINAGE clause specifies the number of lines on a logical page.  It
  can also specify the size of the logical page's top and bottom margins
  and the line where the footing area begins in the page body.

  Format -

   LINAGE IS {page-lines} LINES [ WITH FOOTING AT footing-line ]
      [ LINES AT TOP top-lines ] [ LINES AT BOTTOM bottom-lines ]

1 - page-lines

  is a positive integer or the data-name of an elementary unsigned
  integer numeric data item.  Its value must be greater than zero.  It
  specifies the number of lines that can be written or spaced on the
  logical page.  If page-lines is a data-name, it can be qualified.

2 - footing-line

  is a positive integer or the data-name of an elementary unsigned
  integer numeric data item.  Its value must be greater than zero, but
  cannot be greater than page-lines.  Footing-lines specifies the line
  number where the footing area begins in the page body.  If
  footing-line is a data-name, it can be qualified.

3 - top-lines

  is an integer or the data-name of an elementary unsigned integer
  numeric data item.  Its value can be zero.  Top-lines specifies the
  number of lines in the top margin of the logical page.  If top-lines
  is a data-name, it can be qualified.

4 - bottom-lines

  is an integer or the data-name of an elementary unsigned integer
  numeric data item.  Its value can be zero.  Bottom-lines specifies
  the number of lines in the bottom margin of the logical page.  If
  bottom-lines is a data-name, it can be qualified.