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: Jakob Gerrits Helder
(1752 Pieterburen, Eenrum, Groningen, Nederland - 25 Nov 1826 Pieterburen, Eenrum, Groningen, Nederland)
Mother: Geertruit Hommes
(Cal 1760 Westernieland, Eenrum, Groningen, Nederland - 28 Jul 1825 Pieterburen, Eenrum, Groningen, Nederland)
Geertje Jacobs Helder
(1790 Pieterburen, Eenrum, Groningen, Nederland - 05 Dec 1877 Delfzijl, Groningen, Nederland)
Jan Luitjens Luitjens
(30 May 1785 Westernieland, Eenrum, Groningen, Nederland - 06 May 1847 Hornhuizen, Kloosterburen, Groningen, Nederland)
         └─ Martje Jans Luitjens
(26 Oct 1819 Hornhuizen, Kloosterburen, Groningen, Nederland - 19 Aug 1844 Westernieland, Eenrum, Groningen, Nederland)
          Rijpke Broers Beukema
(21 May 1816 Vierhuizen, Ulrum, Groningen, Nederland - 14 Apr 1891 Hornhuizen, Kloosterburen, Groningen, Nederland)
                   ├─ Imke Beukema
(25 Dec 1841 Westernieland, Eenrum, Groningen, Nederland - Yes, date unknown)
                   └─ Geertje Beukema
(15 Feb 1843 Westernieland, Eenrum, Groningen, Nederland - Yes, date unknown)