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":
Henry Nieman Bacon
(13 Dec 1846 Pate Hill, Greene County, Tennessee, USA - 16 Jan 1923 Douglas County, Oregon, USA)
         ├─John Ganaway Bacon
(11 May 1885 Parrottsville, Cocke County, Tennessee, USA - 1 Mar 1971 Wilbur, Douglas County, Oregon, USA)
         │ Vera Elpha James
(Douglas County, Oregon, USA;20 Nov 1892 - 19 Dec 1982)
         │          ├─John 'Gerald' Bacon
(Umpqua, Douglas County, Oregon, USA;24 Mar 1919 - 11 Mar 2015)
         │          │ Doris Louise Haines
(8 Jun 1922 Drain, Douglas County, Oregon, USA - 24 Mar 2001 Roseburg, Douglas County, Oregon, USA)
         │          ├─Maud T Bacon
(Abt 1922 Oregon, USA - ??)
         │          └─Delmar L Bacon
(Abt 1916 Oregon, USA - ??)
         ├─Margaret Ellen Bacon
(10 Mar 1875 Newport, Cocke County, Tennessee, USA - May 1968 Roseburg, Douglas County, Oregon, USA)
         │ + Jefferson D Hanan
(26 Mar 1861 Oregon, USA - 11 Mar 1902 bur.Douglas County, Oregon, USA)
         ├─Fannie Mell Bacon
(Dec 1878 Greene County, Tennessee, USA - 6 Sep 1962 Tacoma, Pierce County, Washington, USA)
         │ + Walter Wells Leatherwood
(7 Nov 1880 Haywood County, North Carolina, USA - 22 Oct 1947 Tacoma, Pierce County, Washington, USA)
         ├─George Garfield Bacon
(27 Feb 1881 Pate Hill, Greene County, Tennessee, USA - 19 Mar 1957 Alameda County, California, USA)
         │ Maude F Ollivant
(2 Feb 1879 Oregon, USA - 4 Aug 1972 Contra Costa County, California, USA)
         │          ├─Henry Bacon
(Abt 1917 Oregon, USA - ??)
         │          └─Marvin Ollivant Bacon
(17 Jun 1918 Looking Glass, Douglas County, Oregon, USA - ??)
         └─Sally Katherine Bacon
(26 May 1872 Greene County, Tennessee, USA - 12 Feb 1945 Roseburg, Douglas County, Oregon, USA)
          + Robert Jackson Farnsworth, Jr
(28 Jun 1866 Greene County, Tennessee, USA - 14 Mar 1925 Jackson County, Oregon, USA)