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: Pieter Jans Helder
(1772 Leens, Groningen, Nederland - 01 Dec 1853 Westernieland, Eenrum, Groningen, Nederland)
Mother: Louwke Jans Boerema
(1787 Kloosterburen, Groningen, Nederland - 03 Aug 1850 Westernieland, Eenrum, Groningen, Nederland)
Hinderktje Pieters Helder
(23 Feb 1820 Leens, Groningen, Nederland - 14 Jul 1858 Eenrum, Groningen, Nederland)
Jan Fokkens
(26 Sep 1820 Eenrum, Groningen, Nederland - 07 May 1873 Eenrum, Groningen, Nederland)
         ├─ Louwke Fokkens
(06 Nov 1852 Westernieland, Eenrum, Groningen, Nederland - 06 May 1860 Eenrum, Groningen, Nederland)
         ├─ Harmtje Fokkens
(12 Oct 1855 Westernieland, Eenrum, Groningen, Nederland - 14 Mar 1859 Eenrum, Groningen, Nederland)