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: Hendrik Hindriks Baas
(1795 Wildervank, Groningen, Nederland - 08 Sep 1853 Grijpskerk, Groningen, Nederland)
         ├─ Aaltje Ottens
(Abt 1855 Wildervank, Groningen, Nederland - 31 Oct 1930 Hoogezand, Groningen, Nederland)
         │ Jan Heinrich Wehrmeijer
(Abt 1856 Schüttorf, Grafschaft Bentheim, Niedersachsen, Deutschland - 11 Apr 1937 Hoogezand, Groningen, Nederland)
         │          ├─ Ernst Wehrmeijer
(25 Feb 1884 Kalkwijk, Hoogezand, Groningen, Nederland - Yes, date unknown)
         │          ├─ Jan Wehrmeijer
(12 Mar 1888 Sappemeer, Groningen, Nederland - Yes, date unknown)
         │          └─ Magrietha Lisetta Wehrmeijer
(06 Nov 1890 Kalkwijk, Hoogezand, Groningen, Nederland - Yes, date unknown)
         ├─ Harm Ottens
(1866 Onstwedde, Groningen, Nederland - 14 Mar 1920 Zuidlaren, Drenthe, Nederland)
         └─ Hendrik Ottens
(24 Jun 1867 Wildervank, Groningen, Nederland - Yes, date unknown)