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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┌──Thomas Bacon, Sr
(1 Nov 1793 Maidencreek Twp, Berks County, Pennsylvania, USA - │ 5 Sep 1871 Jonesborough, Washington County, Tennessee, USA) =>
┌──Jonathan Daunt Bacon
(Washington County, Tennessee, USA;28 Jan 1843 - 11 Jul 1904)
│ └──Sarah (Sally) Barron
(Jonesborough, Washington County, Tennessee, USA;15 Aug 1805 - 12 Dec 1871)
│
┌──John Thomas Bacon
(Jonesborough, Washington County, Tennessee, USA;2 Oct 1867 - 7 Jan 1923)
│ └──Mary Elizabeth Jones
(23 Jul 1846 Washington County, Tennessee, USA - 10 Oct 1925 Jonesborough, Washington County, Tennessee, USA)
│
Bennie Bowman Bacon (27 Jun 1893 Jonesborough, Washington County, Tennessee, USA - 12 Jan 1950)
└──Isabella Bowman
(Washington County, Tennessee, USA;20 Jun 1871 - 19 Oct 1893)