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: Henry Mershon (1672 Caen, Calvados, Basse-Normandie, France - 20 Sep 1738 Lawrenceville, Mercer County, New Jersey, USA)
Mother: Ann Houghton (1 Jan 1679 Long Island City, Queens County, New York, USA - 20 Oct 1738 Princeton, Mercer County, New Jersey, USA)
Peter Mershon
(1707 Maidenhead, Hunterdon County, New Jersey, USA - 6 Jul 1744)
         └─Aaron Mershon
(1740 Princeton, Mercer County, New Jersey, USA - 27 Aug 1776 Brooklyn, Kings County, New York, USA)
          + Mary Gapen
(Abt 1740 Philadelphia, Philadelphia County, Pennsylvania, USA - Aft 1821 Ohio, USA)