The paper length is not relevant since the chart flows from one page to the next.
Mobile
in.
mm
Staand
2.75
70
For smart phones, not for printing
Liggend
5.5
140
For smart phones, not for printing
International
in.
mm
A5 Staand
5.82
148
A4 Staand
8.25
210
Also A5 Liggend
A4 Liggend
11.71
297
Also A3 Liggend
A3 Liggend
16.54
420
USA & Canada
in.
mm
Letter Staand
8.5
216
Also Legal Staand
Letter Liggend
11
279
Legal Liggend
14
356
Also Ledger Staand
Ledger Liggend
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":
:          :         │ Cornelis Been
(23 okt 1815 Aalsmeer - 16 feb 1900 Amsterdam)
:          :         │          ├─Johanna Been
(Aalsmeer;09 jan 1838 - 30 jan 1838)
:          :         │          ├─Gerrit Been
(Aalsmeer;20 feb 1839 - 10 sep 1839)
:          :         │          ├─Elisabeth Been
(13 mrt 1840 Aalsmeer - 26 feb 1916 Haarlemmermeer)
:          :         │          ├─Gerrit Been
(09 sep 1844 Aalsmeer - 06 jun 1908 Rotterdam) =>
:          :         │          │ + Boukje de Wilde
(27 mei 1841 Haarlem - 09 nov 1915 Rotterdam)
:          :         │          ├─Jacob Been
(Aalsmeer;27 mrt 1848 - 21 jun 1848)
:          :         │          ├─Jacob Been
(15 mei 1849 Aalsmeer - 29 mei 1923 Rotterdam)
:          :         │          ├─Johannis Been
(09 sep 1850 Aalsmeer - Ja, datum echter onbekend)
:          :         │          │ + Adriaantje Johanna Bootsma
(19 nov 1852 Amsterdam - Ja, datum echter onbekend)
:          :         │          └─Johanna Been
(Aalsmeer;19 mei 1854 - 05 aug 1854)
:          :         ├─Elizabeth Bosch
(Aalsmeer;05 dec 1814 - 11 okt 1825)