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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┌──Otis Clifford Dermer
(11 Nov 1909 Hoytville, Wood County, Ohio, USA - 4 May 2000 Stillwater, Payne County, Oklahoma, USA)
┌──Richard Hughes Dermer
(19 Jun 1939 Stillwater, Payne County, Oklahoma, USA - 14 Mar 2014 Oklahoma City, Oklahoma County, Oklahoma, USA)
│ │ ┌──William Robert Hughes
(12 Dec 1876 Cleveland, Bradley County, Tennessee, USA - │ │ │ 15 Jan 1960 Gainesville, Cooke County, Texas, USA)
│ └──Velma Verne Hughes
(28 Jan 1912 Tecumseh, Pottawatomie County, Oklahoma, USA - 28 May 2009 Stillwater, Payne County, Oklahoma, USA)
│ └──Rosa Daphne Bacon
(5 Dec 1874 Bradley County, Tennessee, USA - 9 Mar 1960 Houston, Harris County, Texas, USA) =>