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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┌──Levi Trewhitt, Jr
(1775 England - 15 Dec 1830 Macon County, North Carolina, USA)
┌──Judge Levi Trewhitt
(14 Jul 1797 Buncombe County, North Carolina, USA - 31 Jan 1862 Mobile, Mobile County, Alabama, USA)
│ └──Susanna Morgan
(1780 Rowan County, North Carolina, USA - 11 Jul 1860 Macon County, North Carolina, USA)
│
┌──Daniel Coffee Trewhitt
(29 Jan 1823 Morgan County, Tennessee, USA - 4 Jan 1891 Chattanooga, Hamilton County, Tennessee, USA)
│ │
│ │ ┌──Daniel Simeon Lavender
(29 Apr 1776 Jones County, North Carolina, USA - 11 Dec 1856 Morgan County, Tennessee, USA)
│ └──Harriett Lavender
(3 May 1803 Morgan County, Tennessee, USA - 9 Jan 1855 Cleveland, Bradley County, Tennessee, USA)
│ └──Elizabeth ?Koonce Adam Howard?
(1779 Jones County, North Carolina, USA - 29 Jul 1843 Morgan County, Tennessee, USA)
│
┌──Thomas Levi Trewhitt
(8 Nov 1842 Georgia, USA - 7 Sep 1910 Chattanooga, Hamilton County, Tennessee, USA)
│ └──Mary Malissa Wynn
(1823 Burke County, North Carolina, USA - 4 May 1861 Hamilton County, Tennessee, USA)
│
Robert Hyslop Trewhitt (11 Jan 1873 Tennessee, USA - 6 May 1960 Chattanooga, Hamilton County, Tennessee, USA)
└──Tennessee Jane Hunter
(15 Nov 1841 Tennessee, USA - 7 Sep 1895 Chattanooga, Hamilton County, Tennessee, USA)