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
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
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
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":
         │ Scholz Friedrich Albert
(05 mar. 1878 Piła, pilski, wielkopolskie, Polska - 29 sier. 1922 Poznań, poznański, wielkopolskie, Polska)
         │ :         ├─Scholz Anna
(15 sier. 1913 Poznań, poznański, wielkopolskie, Polska - data nieznana)
         │ :         └─Scholz Albert
(Poznań, poznański, wielkopolskie, Polska;23 maj 1918 - 20 gru. 1988)
         │ :          NN Irena
(25 wrz. 1919 - 9 wrz. 1999 Poznań, poznański, wielkopolskie, Polska)
         │ Stęszewski Tadeusz
(20 paź. 1893 Bugaj, wrzesiński, wielkopolskie, Polska -          │ 1982 poch.Cmentarz Komunalny Junikowo Poznań, poznański, wielkopolskie, Polska)
         │          ├─Stęszewski Andrzej Walerian
(27 paź. 1923 Poznań, poznański, wielkopolskie, Polska -          │          │ 5 list. 2006 North Tonawanda, Niagara, New York, USA)
         │          ├─Stęszewski Kazimierz Stanisław
(18 gru. 1924 Poznań, poznański, wielkopolskie, Polska -          │          │ 30 sier. 1981 poch.Saint Johns Catholic Cemetery Jackson, Jackson, Michigan, USA)