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: Marten Klein ter Borch
(01 Jul 1846 Nieuw-Buinen, Borger, Drenthe, Nederland - Yes, date unknown)
Mother: Jantina de Ruiter
(21 Dec 1846 Wildervank, Groningen, Nederland - 27 Apr 1918 Nieuw-Buinen, Borger, Drenthe, Nederland)
Annechien ter Borch
(06 Oct 1870 Stadskanaal, Groningen, Nederland - Yes, date unknown)
Jan Smit
(28 Jan 1867 Nieuw-Buinen, Borger, Drenthe, Nederland - Yes, date unknown)
         ├─ Jans Smit
(30 Dec 1890 Stadskanaal, Groningen, Nederland - Yes, date unknown)
         │ + Jeltje Bieze
(19 Aug 1888 Stadskanaal, Groningen, Nederland - Yes, date unknown)
         ├─ Jantina Smit
(10 Apr 1893 Stadskanaal, Groningen, Nederland - Yes, date unknown)
         ├─ Pieter Smit
(10 Apr 1896 Stadskanaal, Groningen, Nederland - Yes, date unknown)
         ├─ Jantina Smit
(22 Jan 1899 Nieuw-Buinen, Borger, Drenthe, Nederland - Yes, date unknown)
         │ + Willem Nicolaas
(12 Dec 1897 's-Gravenhage, Zuid-Holland, Nederland - Yes, date unknown)
         └─ Angenieta Aaltje Smit
(12 Aug 1901 Nieuw-Buinen, Borger, Drenthe, Nederland - 30 Jan 1904 Nieuw-Buinen, Borger, Drenthe, Nederland)