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: Simen Jans Slaper
(1735 Oude Pekela, Groningen, Nederland - Yes, date unknown)
Mother: Grietje Hindriks Gortemaker
(1742 Oude Pekela, Groningen, Nederland - 26 Oct 1821 Oude Pekela, Groningen, Nederland)
Hendrikje Simons Slaper
(1773 Oude Pekela, Groningen, Nederland - 30 Mar 1848 Nieuwe Pekela, Groningen, Nederland)
Jacob Eltjes de Ruiter
(1763 Oude Pekela, Groningen, Nederland - 24 Feb 1806 Oude Pekela, Groningen, Nederland)
         └─ Elzijn Jacobs de Ruiter
(1804 Oude Pekela, Groningen, Nederland - Yes, date unknown)
          + Stephen op 't Holt
(24 Mar 1793 Oude Pekela, Groningen, Nederland - 28 Apr 1841 Nieuwe Pekela, Groningen, Nederland)
          + Hindrik Jans Koster
(16 Jan 1805 Nieuwe Pekela, Groningen, Nederland -           24 Nov 1875 Nieuwe Pekela, Groningen, Nederland)