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 Hindriks Vlas
(Est 1730 Nieuwe Pekela, Groningen, Nederland - 28 Aug 1776 Oude Pekela, Groningen, Nederland)
Mother: Helena Harms Vonken
(1732 Dörpen, Niedersachsen, Deutschland - Yes, date unknown)
Hendrik Jans Vlas
(Est 1770 Oude Pekela, Groningen, Nederland - Yes, date unknown)
Fennegijn Jans Drenth
(1764 Oude Pekela, Groningen, Nederland - 18 Aug 1838 Oude Pekela, Groningen, Nederland)
         ├─ Joannes Vlas
(1793 Oude Pekela, Groningen, Nederland - 03 May 1858 Oude Pekela, Groningen, Nederland)
         ├─ Margereta Vlas
(1796 Oude Pekela, Groningen, Nederland - Yes, date unknown)
         ├─ Helena Vlas
(1800 Oude Pekela, Groningen, Nederland - 29 Apr 1857 Oude Pekela, Groningen, Nederland)
         │ + Georg Hlawatij
(Est 1800 Weenen, KwaZulu-Natal, Suid-Afrika - 18 Jan 1882 Oude Pekela, Groningen, Nederland)
         └─ Hendricus Vlas
(1803 Oude Pekela, Groningen, Nederland - Yes, date unknown)