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: Henricus van Heuvelen
(Abt 1841 Groningen, Groningen, Nederland - Yes, date unknown)
Mother: Jantje Drenth
(26 Mar 1845 Veendam, Groningen, Nederland - 13 Jun 1887 Veendam, Groningen, Nederland)
Dethmer van Heuvelen
(23 Sep 1871 Veendam, Groningen, Nederland - 05 Dec 1917 Veendam, Groningen, Nederland)
Trientje Zondag
(10 May 1872 Gasselternijveen, Gasselte, Drenthe, Nederland - 22 Apr 1947 Veendam, Groningen, Nederland)
         ├─ Janna van Heuvelen
(10 Apr 1899 Musselkanaal, Onstwedde, Groningen, Nederland - Yes, date unknown)
         │ + Remko Koorn
(24 Apr 1899 Musselkanaal, Onstwedde, Groningen, Nederland - Yes, date unknown)
         ├─ Hendericus van Heuvelen
(14 Aug 1901 Musselkanaal, Onstwedde, Groningen, Nederland - Yes, date unknown)
         │ + Grietje Niehof
(27 Aug 1904 Groningen, Groningen, Nederland - Yes, date unknown)
         ├─ Jantje van Heuvelen
(18 Dec 1903 Musselkanaal, Onstwedde, Groningen, Nederland - Yes, date unknown)
         ├─ Jan van Heuvelen
(11 Jul 1907 Veendam, Groningen, Nederland - 28 Dec 1907 Veendam, Groningen, Nederland)
         ├─ Jan van Heuvelen
(27 Sep 1909 Veendam, Groningen, Nederland - 09 Oct 1909 Veendam, Groningen, Nederland)
         └─ Jan van Heuvelen
(30 Dec 1912 Oosterdiep, Veendam, Groningen, Nederland - Yes, date unknown)