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: Derk Johan van Holstein
(21 Oct 1821 Groningen, Groningen, Nederland - 06 Feb 1890 Kolham, Slochteren, Groningen, Nederland)
Mother: Magdalena Mulder
(27 May 1828 Sappemeer, Groningen, Nederland - Yes, date unknown)
Gerrit van Holstein
(03 Nov 1872 Kolham, Slochteren, Groningen, Nederland - 11 Dec 1915 Groningen, Groningen, Nederland)
Fettje Hulshof
(01 Feb 1882 Wildervank, Groningen, Nederland - 22 Mar 1925 Sappemeer, Groningen, Nederland)
         ├─ Magdalena van Holstein
(03 Apr 1903 Kalkwijk, Hoogezand, Groningen, Nederland - Yes, date unknown)
         │ + Koert Evert Oeseburg
(04 Jul 1901 Finsterwolde, Groningen, Nederland - Yes, date unknown)
         ├─ Wilhelmina van Holstein
(28 May 1905 Kalkwijk, Hoogezand, Groningen, Nederland - Yes, date unknown)
         └─ Derk Johan van Holstein
(04 Nov 1908 Kalkwijk, Hoogezand, Groningen, Nederland - 25 Apr 1930 Sappemeer, Groningen, Nederland)