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: Francis Billingsley (1620 Shropshire, England - 1684 Calvert County, Maryland, USA)
Mother: Ann Frances Hale (1622 Reusel-de Mierden, Noord-Brabant, Netherlands - Abt 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)
         ├─William Billingsley
(Calvert County, Maryland, USA;Oct 1670 - Jul 1716)
         │ Clearanna Bowles
(Calvert County, Maryland, USA;1670 - 4 Aug 1716)
         │          ├─William Billingsley, Jr.
(1691 Calvert County, Maryland, USA - 16 Dec 1745 St Mary's County, Maryland, USA)
         │          │ Mary Emily Sumner
(Nov 1696 Calvert County, Maryland, USA - Dec 1740 St Mary's County, Maryland, USA)
         │          │          ├─James B Billingsley
(Apr 1726 St Mary's County, Maryland, USA - 25 Jan 1776 Guilford County, North Carolina, USA) =>
         │          │          │ + Elizabeth Crabtree
(5 Nov 1726 St Johns Parish, Baltimore County, Maryland, USA -          │          │          │ 5 Nov 1839 McMinn County, Tennessee, USA)
         │          │          ├─Cyrus Billingsley
(1737/38 St Mary's County, Maryland, USA - Dec 1818 Monongalia County, West Virginia, USA)
         │          │          │ + Hannah Webster
(Maryland, USA - 1819)
         │          │          ├─William Sumner Billingsley
(1720 St Mary's County, Maryland, USA - ??)
         │          │          ├─Mary Sumner Billingsley
(Bef 1720 St Mary's County, Maryland, USA - ??)
         │          │          │ + John Wood
         │          │          ├─Margaret Billingsley
(1728 St Mary's County, Maryland, USA - ??)
         │          │          ├─Clearanna Billingsley
(1732 St Mary's County, Maryland, USA - ??)
         │          │          ├─Ann Billingsley
(1723 St Mary's County, Maryland, USA - ??)
         │          │          │ + Henry Hardesty
         │          │          ├─Francis Billingsley
(1736/37 St Mary's County, Maryland, USA - 1799 Wilkes County, Georgia, USA)
         │          │          │ + Asenath Howell
(31 Jan 1748 Baltimore County, Maryland, USA - ??)
         │          ├─Clearanna Billingsley
(Jan 1693 Calvert County, Maryland, USA - Aft 1734)
         │          │ + Thomas Gilly
( - Jan 1720/21 Calvert County, Maryland, USA)
         │          ├─Bowles Billingsley
(Dec 1694 Calvert County, Maryland, USA - May 1744 St Mary's County, Maryland, USA)
         │          ├─Samuel Billingsley
(Jan 1696 Calvert County, Maryland, USA - Abt 1741 St Mary's County, Maryland, USA)
         │          └─Ann Elizabeth Billingsley
(May 1699 Calvert County, Maryland, USA - ??)
         │           + John Wood
         ├─Mary Billingsley
(Sep 1669 Calvert County, Maryland, USA - ??)
         │ + Edward Wood
         ├─Sarah Agatha Billingsley
(1672 Calvert County, Maryland, USA - ??)
         │ + John Stovall
         ├─Elizabeth Billingsley
(1675 Calvert County, Maryland, USA - ??)
         │ + William Bowles
         ├─John Billingsley, Jr
(Calvert County, Maryland, USA;1677 - 1689)
         ├─Susanna Billingsley
(1679/80 Calvert County, Maryland, USA - ??)
         ├─Walter Billingsley
(1685 Calvert County, Maryland, USA - ??)