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: Halbe Wigerus Halbesma
(29 Mar 1857 Rinsumageest, Dantumadeel, Friesland, Nederland - 26 Nov 1928 Amsterdam, Noord-Holland, Nederland)
Mother: Albertje Korte
(20 Mar 1863 Blijham, Wedde, Groningen, Nederland - Yes, date unknown)
Wigerus Halbe Halbesma
(01 Mar 1890 Leeuwarden, Friesland, Nederland - 19 May 1952 Amsterdam, Noord-Holland, Nederland)
Hendrica Loisa Vissers
(12 Oct 1889 Amsterdam, Noord-Holland, Nederland - Yes, date unknown)
         ├─ Halbe Wiegerus Halbesma
(02 Jun 1918 Amsterdam, Noord-Holland, Nederland - 20 Jul 1976 Amsterdam, Noord-Holland, Nederland)
         │          └─ Wieger Halbe Halbesma
(03 Apr 1950 Amsterdam, Noord-Holland, Nederland - 10 Jun 1967 Amsterdam, Noord-Holland, Nederland)
         └─ Lodewijk Hendrik Halbesma
(06 Nov 1922 Amsterdam, Noord-Holland, Nederland - 30 Jun 1989 Rijswijk, Zuid-Holland, Nederland)
          + Helena Cornelia Hegener
(Yes, date unknown - Yes, date unknown)