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: Ruurt Wijngaard
(08 Mar 1840 Muntendam, Groningen, Nederland - 11 Oct 1903 Nieuwe Pekela, Groningen, Nederland)
Mother: Heiltje Robers
(18 Nov 1842 Noordbroek, Groningen, Nederland - 24 Jan 1923 Oude Pekela, Groningen, Nederland)
Jan Wijngaard
(04 Nov 1882 Veendam, Groningen, Nederland - Yes, date unknown)
Dievertje Siepel
(04 Mar 1878 Veendam, Groningen, Nederland - 14 Apr 1938 Groningen, Groningen, Nederland)
         ├─ Albert Wijngaard
(14 Jul 1903 Veendam, Groningen, Nederland - Yes, date unknown)
         └─ Heiltje Wijngaard
(21 Mar 1906 Nieuwe Pekela, Groningen, Nederland - Yes, date unknown)
          + Koert Wijngaard
(16 Dec 1906 Ommelanderwijk, Veendam, Groningen, Nederland - Yes, date unknown)