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":
Father: Judge Levi Trewhitt (14 Jul 1797 Buncombe County, North Carolina, USA - 31 Jan 1862 Mobile, Mobile County, Alabama, USA)
Mother: Harriett Lavender (3 May 1803 Morgan County, Tennessee, USA - 9 Jan 1855 Cleveland, Bradley County, Tennessee, USA)
Susan Elizabeth Trewhitt
(4 Aug 1824 Morgan County, Tennessee, USA - 10 Jul 1891 Cleveland, Bradley County, Tennessee, USA)
David C Cowan
(8 Feb 1825 Tennessee, USA - 20 Feb 1874 Cleveland, Bradley County, Tennessee, USA)
         ├─Harriet Cowan
(Cleveland, Bradley County, Tennessee, USA;31 Mar 1846 - 14 Feb 1924)
         │ + John A. Lacy
(21 Dec 1838 Bradley County, Tennessee, USA - 3 Apr 1919 Cleveland, Bradley County, Tennessee, USA)
         ├─James Monroe Cowan
(12 Oct 1848 Tennessee, USA - 18 Nov 1904 Collin County, Texas, USA)
         │ + Sarah A Lacy
(2 Mar 1843 - 18 Aug 1889 bur.Altoga, Collin County, Texas, USA)
         ├─Caroline Cowan
(Cleveland, Bradley County, Tennessee, USA;30 Sep 1849 - 30 Jun 1898)
         │ + John Hughes
(16 Apr 1840 Tennessee, USA - 4 Feb 1908 Bradley County, Tennessee, USA)
         ├─Mary Elizabeth Cowan
(Cleveland, Bradley County, Tennessee, USA;6 Dec 1853 - 16 Apr 1891)
         ├─Martha Lucinda Cowan
(29 Feb 1856 Cleveland, Bradley County, Tennessee, USA - 13 Jul 1876 bur.Cleveland, Bradley County, Tennessee, USA)
         ├─David Franklin Cowan
(30 Nov 1858 Cleveland, Bradley County, Tennessee, USA - 2 Aug 1883 Bradley County, Tennessee, USA)
         └─Myra A. Cowan
(1861 Cleveland, Bradley County, Tennessee, USA - Aft 1910)
          + John L Ward
(13 Jan 1859 Washington, District of Columbia, USA - 8 Dec 1912 Knoxville, Knox County, Tennessee, USA)