The paper length is not relevant since the chart flows from one page to the next.
Mobile
in.
mm
Portrait
2.75
70
For smart phones, not for printing
Landscape
5.5
140
For smart phones, not for printing
USA & Canada
in.
mm
Letter Portrait
8.5
216
Also Legal Portrait
Letter Landscape
11
279
Legal Landscape
14
356
Also Ledger Portrait
Ledger Landscape
17
432
International
in.
mm
A5 Portrait
5.82
148
A4 Portrait
8.25
210
Also A5 Landscape
A4 Landscape
11.71
297
Also A3 Landscape
A3 Landscape
16.54
420
The Text+ programs assume that the right and left margins are each about 25mm (1/2 inch) wide.
On the Format for Printing page, differences in page margins can be accommodated by the "fudge factor":
Father: John Billingsley
(1587 Astley, Shropshire, England - 1659 19 OCT 1655(bur.))
Mother: Agatha Cooper
(1593 Shropshire, England - 1666 Rotterdam, Zuid-Holland, Netherlands)
Francis Billingsley
(1620 Shropshire, England - 1684 Calvert County, Maryland, USA)
Ann Frances Hale
(1622 Reusel-de Mierden, Noord-Brabant, Netherlands - 1669 Calvert County, Maryland, USA)
     ┌──John Billingsley
(1647 Rotterdam, Zuid-Holland, Netherlands - 1693 at sea)
     │ Sarah Ann Billingsley
(1652 Essex County, Virginia, USA - 1712 St Mary's County, Maryland, USA)
     │      ┌──Mary Billingsley
(1669 Calvert County, Maryland, USA - )
     │      │ + Edward Wood
(0000-00-00 - )
     │      ┌──William Billingsley
(Calvert County, Maryland, USA;1670 - 1716)
     │      │ Clearanna Bowles
(Calvert County, Maryland, USA;1670 - 1716)
     │      │      ┌──William Billingsley, Jr.
(1691 Calvert County, Maryland, USA - 1745 St Mary's County, Maryland, USA)
     │      │      │ Mary Emily Sumner
(1696 Calvert County, Maryland, USA - 1740 St Mary's County, Maryland, USA)
     │      │      │      ┌──Mary Sumner Billingsley
(1719 St Mary's County, Maryland, USA - )
     │      │      │      │ + John Wood
(0000-00-00 - )
     │      │      │      ┌──William Sumner Billingsley
(1720 St Mary's County, Maryland, USA - )
     │      │      │      ┌──Ann Billingsley
(1723 St Mary's County, Maryland, USA - )
     │      │      │      │ + Henry Hardesty
(0000-00-00 - )
     │      │      │      ┌──James B Billingsley
(1726 St Mary's County, Maryland, USA - 1776 Guilford County, North Carolina, USA) =>
     │      │      │      │ + Elizabeth Crabtree
(1726 St Johns Parish, Baltimore County, Maryland, USA - 1839 McMinn County, Tennessee, USA)
     │      │      │      ┌──Margaret Billingsley
(1728 St Mary's County, Maryland, USA - )
     │      │      │      ┌──Clearanna Billingsley
(1732 St Mary's County, Maryland, USA - )
     │      │      │      ┌──Francis Billingsley
(1737 St Mary's County, Maryland, USA - 1799 Wilkes County, Georgia, USA)
     │      │      │      │ + Asenath Howell
(1748 Baltimore County, Maryland, USA - )
     │      │      │      ┌──Cyrus Billingsley
(1738 St Mary's County, Maryland, USA - 1818 Monongalia County, West Virginia, USA)
     │      │      ┌──Clearanna Billingsley
(1693 Calvert County, Maryland, USA - 1735)
     │      │      │ + Thomas Gilly
(0000-00-00 - 1721 Calvert County, Maryland, USA)
     │      │      ┌──Bowles Billingsley
(1694 Calvert County, Maryland, USA - 1744 St Mary's County, Maryland, USA)
     │      │      ┌──Samuel Billingsley
(1696 Calvert County, Maryland, USA - 1741 St Mary's County, Maryland, USA)
     │      │      └──Ann Elizabeth Billingsley
(1699 Calvert County, Maryland, USA - )
     │      │       + John Wood
(0000-00-00 - )
     │      ┌──Sarah Agatha Billingsley
(1672 Calvert County, Maryland, USA - )
     │      │ + John Stovall
(0000-00-00 - )
     │      ┌──Elizabeth Billingsley
(1675 Calvert County, Maryland, USA - )
     │      │ + William Bowles
(0000-00-00 - )
     │      ┌──John Billingsley, Jr
(Calvert County, Maryland, USA;1677 - 1689)
     │      ┌──Susanna Billingsley
(1680 Calvert County, Maryland, USA - )
     │      └──Walter Billingsley
(1685 Calvert County, Maryland, USA - )
     ┌──Ann Billingsley
(Calvert County, Maryland, USA;1650 - 1650)
     ┌──Francis Billingsley, Jr
(1653 Calvert County, Maryland, USA - 1695 Selby Clifts, Calvert County, Maryland, USA)