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":
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┌──John Bacon
(Washington County, Tennessee, USA;Abt 1797 - 1831) =>
┌──Jeremiah Bacon
(7 Mar 1824 Washington County, Tennessee, USA - 31 Jan 1868 Macoupin County, Illinois, USA)
│ └──Leah Jackson
(Washington County, Tennessee, USA;Abt 1797 - Bef 1860)
│
┌──John Nimon Bacon
(19 Nov 1846 Washington County, Tennessee, USA - 19 Jul 1936 Hettick, Macoupin County, Illinois, USA)
│ └──Susan Sharp King
(4 Mar 1822 Washington County, Tennessee, USA - 20 Jun 1904 Macoupin County, Illinois, USA)
│
Elbert Edward Bacon (1 Oct 1881 Macoupin County, Illinois, USA - 6 Mar 1966 San Diego, San Diego County, California, USA)
└──Lucinda Alice Ribble
(18 Jul 1856 Illinois, USA - 10 May 1935 Hettick, Macoupin County, Illinois, USA)