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":
Nancy Brackney?
(18 May 1806 Virginia, USA - 19 Jun 1885 Cleveland, Bradley County, Tennessee, USA)
         └─Mary Brackney Womble
(5 Oct 1825 Tennessee, USA - 21 Nov 1897 Cleveland, Bradley County, Tennessee, USA)
          + James A Hassell
(Apr 1836 Georgia, USA - 9 Feb 1908 Menlo, Chattooga County, Georgia, USA)
          Isaac Bower
(25 May 1822 Roane County, Tennessee, USA - 3 Aug 1852 Cleveland, Bradley County, Tennessee, USA)
                   ├─Lucretia T Bower
(1846 Bradley County, Tennessee, USA - 7 Feb 1866 bur.Cleveland, Bradley County, Tennessee, USA)
                   │ + William Oliver O'Neil
(15 Jun 1842 New Market, Jefferson County, Tennessee, USA -                    │ 26 Feb 1907 Momence, Kankakee County, Illinois, USA)
                   ├─Susan F Bower
(10 Feb 1848 Bradley County, Tennessee, USA - 10 Oct 1910 Cleveland, Bradley County, Tennessee, USA)
                   │ + John M Crowe
(1 Jul 1829 Tennessee, USA - 10 Jan 1908 bur.Cleveland, Bradley County, Tennessee, USA)
                   ├─Mary Henrietta Bower
(1852 Bradley County, Tennessee, USA - 14 Aug 1878 Cleveland, Bradley County, Tennessee, USA)
                   │ + Charles Sanford Davis
(Abt 1848 Bradley County, Tennessee, USA - ??)
                   └─Winfield Scott Bower
(1850 Bradley County, Tennessee, USA - 26 May 1912 Fort Worth, Tarrant County, Texas, USA)
                    + Georgia Ann Johnson
(1853 Georgia, USA - 13 Jun 1936 Fort Worth, Tarrant County, Texas, USA)