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: Roelf Abels Pot
(04 Nov 1805 Windeweer, Hoogezand, Groningen, Nederland - 05 May 1869 Windeweer, Hoogezand, Groningen, Nederland)
Mother: Dievertje Jacobs Mulder
(Cal 1817 Sappemeer, Groningen, Nederland - 24 Feb 1860 Windeweer, Hoogezand, Groningen, Nederland)
Martje Pot
(Abt 1848 Windeweer, Hoogezand, Groningen, Nederland - 31 Dec 1896 Windeweer, Hoogezand, Groningen, Nederland)
Geert de Boer
(Abt 1844 Nieuwe Compagnie, Hoogezand, Groningen, Nederland - Yes, date unknown)
         ├─ Jantje de Boer
(10 Mar 1883 Windeweer, Hoogezand, Groningen, Nederland - Yes, date unknown)
         ├─ Kornelis de Boer
(13 Apr 1884 Windeweer, Hoogezand, Groningen, Nederland - Yes, date unknown)
         ├─ Kornelis de Boer
(09 Jun 1885 Windeweer, Hoogezand, Groningen, Nederland - Yes, date unknown)
         └─ Eelke de Boer
(07 Nov 1891 Windeweer, Hoogezand, Groningen, Nederland - Yes, date unknown)