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: Ubbo de Groot
(20 May 1841 Oude Pekela, Groningen, Nederland - Yes, date unknown)
Mother: Catrina van der Grijspaarde
(22 Dec 1837 Oude Pekela, Groningen, Nederland - 19 Mar 1902 Oude Pekela, Groningen, Nederland)
Izaäk de Groot
(24 Jan 1868 Oude Pekela, Groningen, Nederland - 08 Jan 1947 Winschoten, Groningen, Nederland)
Annechien Lameijer
(07 Aug 1867 Oostwold, Midwolda, Groningen, Nederland - 02 Jul 1902 Winschoten, Groningen, Nederland)
:         ├─ Catharina Esderdina de Groot
(23 Jan 1892 Oostwold, Midwolda, Groningen, Nederland - Yes, date unknown)
:         │ + Willem Meijerink
(26 Jun 1890 Nieuwe Pekela, Groningen, Nederland - 20 Dec 1955 Nieuwe Pekela, Groningen, Nederland)
:         ├─ Wubbo de Groot
(08 Nov 1893 Oude Pekela, Groningen, Nederland - Yes, date unknown)
:         └─ Ubbo Hendrik de Groot
(14 Oct 1900 Winschoten, Groningen, Nederland - Yes, date unknown)
:          + Talkina de Ruiter
(26 Jul 1904 Winschoten, Groningen, Nederland - Yes, date unknown)
+ Frouwke Meijer
(12 Aug 1864 Oostwold, Midwolda, Groningen, Nederland - 15 Sep 1921 Winschoten, Groningen, Nederland)
+ Beertje Rentema
(09 Jul 1884 Bunde, Ostfriesland, Niedersachsen, Deutschland - 10 Jun 1941 Winschoten, Groningen, Nederland)