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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┌──James Franklin Hines
(28 Apr 1866 Illinois, USA - 8 Sep 1926 Des Moines, Polk County, Iowa, USA)
William Franklin Hines (19 Jul 1910 Leon, Decatur County, Iowa, USA - 10 Jun 1976 Sepulveda County, California, USA)
│ ┌──Samuel McCutchan
(6 Jan 1795 Bourbon County, Kentucky, USA - 26 Apr 1867 Scottsville, Floyd County, Indiana, USA) =>
│ ┌──Josiah McCutchan
(27 Oct 1833 New Albany, Floyd County, Indiana, USA - 3 Apr 1891 Leon, Decatur County, Iowa, USA)
│ │ └──Sarah Reasor
(14 Nov 1805 Little Mount, Spencer County, Kentucky, USA - 20 May 1854 Scottsville, Floyd County, Indiana, USA) =>
│ │
└──Ella Ann McCutchan
(Leon, Decatur County, Iowa, USA;13 May 1868 - 31 Oct 1938)
│
│ ┌──William 'Arbuckle' Nelson
(13 Sep 1807 Mason County, West Virginia, USA - 4 Aug 1876 Cambria, Wayne County, Iowa, USA) =>
└──Elizabeth Ann (Betty) Nelson
(18 Feb 1842 Madison County, Indiana, USA - 13 Sep 1906 Leon, Decatur County, Iowa, USA)
└──Nancy Jane (Jenny) Greenlee
(20 Aug 1815 Mason County, West Virginia, USA - 2 Jul 1890 Shawnee, Pottawatomie County, Oklahoma, USA) =>