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":
         │          │          ├─ Gerardus Roemers
(17 Mar 1771 Scheemda, Groningen, Nederland - 27 Jan 1842 Groningen, Groningen, Nederland) =>
         │          │          │ + Sietje Reitsema
(Cal 1779 Groningen, Groningen, Nederland - 19 Jan 1854 Groningen, Groningen, Nederland)
         │          │          ├─ Ida Roemers
(1776 Groningen, Groningen, Nederland - 12 Dec 1824 Groningen, Groningen, Nederland)
         │          │          ├─ Hindrik Roemers
(1786 Groningen, Groningen, Nederland - 31 Oct 1859 Groningen, Groningen, Nederland) =>
         │          │          │ + Geertje Jans Aaldering
(1788 Groningen, Groningen, Nederland -          │          │          │ : 27 Apr 1839 Garmerwolde, Ten Boer, Groningen, Nederland)
         │          │          │ + Grietje Heikes de Vries
(08 Oct 1797 Oterdum, Delfzijl, Groningen, Nederland -          │          │          │ 09 Feb 1875 Groningen, Groningen, Nederland)
         │          │          ├─ Johannes Roemers
(1789 Groningen, Groningen, Nederland - 09 Feb 1838 Groningen, Groningen, Nederland) =>
         │          │          │ + Harmtijn van Bolhuis
(1790 Hoornsche Dijk, Haren, Groningen, Nederland - Yes, date unknown)
         │          │          └─ Aaltje Roemers
(1791 Groningen, Groningen, Nederland - 31 Dec 1817 Groningen, Groningen, Nederland)
         │          ├─ Derk Roemers
(1747 Groningen, Groningen, Nederland - Yes, date unknown)
         │          │ Lammegien Klaasens Jacobs
(1738 Helpman, Haren, Groningen, Nederland - Yes, date unknown)
         │          │          ├─ Ida Roemers
(Yes, date unknown - 09 Nov 1826 Groningen, Groningen, Nederland)
         │          │          └─ Jacob Roemers
(1773 Groningen, Groningen, Nederland - 14 Apr 1840 Groningen, Groningen, Nederland) =>
         │          │           + Elizabeth Geerts Blank
(27 Feb 1773 Hoogezand, Groningen, Nederland - 29 Jul 1837 Groningen, Groningen, Nederland)