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: Jan Oldenburg
(Yes, date unknown - Yes, date unknown)
Anna Oldenburg
(30 Jun 1860 Oldehove, Groningen, Nederland - 06 Mar 1931 Groningen, Groningen, Nederland)
Jan Fekkes
(23 Sep 1854 Wildervank, Groningen, Nederland - 24 Sep 1904 Smilde, Drenthe, Nederland)
         ├─ Jan Reintje Fekkes
(25 Aug 1889 Hoogezand, Groningen, Nederland - Yes, date unknown)
         ├─ Grietje Fekkes
(28 Dec 1891 Sappemeer, Groningen, Nederland - Yes, date unknown)
         └─ Geessien Fekkes
(13 Aug 1895 Martenshoek, Hoogezand, Groningen, Nederland - 11 Feb 1960 Groningen, Groningen, Nederland)
          Jan Gnodde
(11 Sep 1894 Oude Pekela, Groningen, Nederland - 21 Mar 1969 Groningen, Groningen, Nederland)
                   ├─ Albert Gnodde
(26 Feb 1917 Groningen, Groningen, Nederland - 02 Jun 1924 Groningen, Groningen, Nederland)
                   ├─ Geertruida Gnodde
(28 Aug 1921 Groningen, Groningen, Nederland - 14 Aug 1982 Groningen, Groningen, Nederland)
                   │ + Geert van Tongeren
(Yes, date unknown - Yes, date unknown)
                   └─ Grietje Fennechien Gnodde
(25 Jul 1927 Groningen, Groningen, Nederland - 25 May 1928 Groningen, Groningen, Nederland)