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: Roelf de Vries
(25 Mar 1830 Hoogezand, Groningen, Nederland - 20 Aug 1864 Westerdiep, Veendam, Groningen, Nederland)
Mother: Hillechien Drenth
(07 Aug 1830 Westerdiep, Veendam, Groningen, Nederland - 28 Apr 1885 Hoogezand, Groningen, Nederland)
Jan de Vries
(28 Dec 1857 Wildervank, Groningen, Nederland - 05 May 1929 Arnhem, Gelderland, Nederland)
Harmina Roelfsema
(06 Nov 1861 Oosterdiep, Veendam, Groningen, Nederland - 26 Jun 1945 Haren, Groningen, Nederland)
         └─ Roelf Hendrik Vries
(17 Apr 1891 Assen, Drenthe, Nederland - Yes, date unknown)