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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┌──Samuel Billingsley, Jr
(9 Apr 1775 Guilford County, North Carolina, USA - │ 29 Apr 1857 Cold Spring, Bledsoe County, Tennessee, USA) =>
┌──John M Billingsley
(19 Nov 1805 Barren County, Kentucky, USA - 16 May 1883 Van Buren County, Tennessee, USA)
│ └──Nancy Howard Mulkey
(9 Apr 1780 North Carolina, USA - 4 Sep 1850 Bledsoe County, Tennessee, USA)
│
┌──Cyrus Billingsley
(13 Dec 1839 Tennessee, USA - 21 Apr 1867 Van Buren County, Tennessee, USA)
│ │
│ │ ┌──John Blackburn Moyers
(30 Jan 1792 Jefferson County, Tennessee, USA - 13 Nov 1875 Warren County, Tennessee, USA) =>
│ └──Hannah Davis Myers
(23 Dec 1814 Long Creek, Jefferson County, Tennessee, USA - 9 Apr 1867 Van Buren County, Tennessee, USA)
│ └──Mary Snoddy
(15 Jul 1790 Edgecombe, Edgecombe County, North Carolina, USA - │ 8 Nov 1861 McMinnville, Warren County, Tennessee, USA) =>
│
Benjamin Fillip Billingsley (24 May 1863 Van Buren County, Tennessee, USA - 21 Feb 1941 Colfax, Whitman County, Washington, USA)
└──Elizabeth Plumlee
(5 Oct 1843 Tennessee, USA - 29 Nov 1903 Van Buren County, Tennessee, USA)