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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┌──Joseph H M Blackburn
(Jan 1849 Jefferson County, Tennessee, USA - 2 Dec 1904 Knoxville, Knox County, Tennessee, USA) =>
┌──Raymond Clinton Blackburn, Sr
(28 Mar 1879 Tennessee, USA - 7 Jun 1969 Johnson City, Washington County, Tennessee, USA)
│ └──Annie Eliza Eckel
(Jun 1851 Tennessee, USA - 31 Jul 1919 Johnson City, Washington County, Tennessee, USA)
│
┌──Ray Clinton Blackburn, Jr
(Johnson City, Washington County, Tennessee, USA;4 Jun 1910 - May 1981)
│ └──Dessa Edith Neaureth
(27 Apr 1889 Big Rapids, Mecosta County, Michigan, USA - │ 18 Oct 1968 Johnson City, Washington County, Tennessee, USA)