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":
William Robert Hughes
(12 Dec 1876 Cleveland, Bradley County, Tennessee, USA - 15 Jan 1960 Gainesville, Cooke County, Texas, USA)
Rosa Daphne Bacon
(5 Dec 1874 Bradley County, Tennessee, USA - 9 Mar 1960 Houston, Harris County, Texas, USA)
         ├─Velma Verne Hughes
(28 Jan 1912 Tecumseh, Pottawatomie County, Oklahoma, USA - 28 May 2009 Stillwater, Payne County, Oklahoma, USA)
         │ Otis Clifford Dermer
(11 Nov 1909 Hoytville, Wood County, Ohio, USA - 4 May 2000 Stillwater, Payne County, Oklahoma, USA)
         │          │          │ Richard Atkinson
         │          ├─Richard Hughes Dermer
(19 Jun 1939 Stillwater, Payne County, Oklahoma, USA -          │          │ 14 Mar 2014 Oklahoma City, Oklahoma County, Oklahoma, USA)
         │          │ Living
         │           Naaman Ospovat, IV
(29 Apr 1949 Stillwater, Payne County, Oklahoma, USA - ?? Norman, Cleveland County, Oklahoma, USA)
         ├─Richard Chester Hughes
(21 Jul 1900 Chattanooga, Hamilton County, Tennessee, USA - May 1985 Houston, Harris County, Texas, USA)
         ├─Theodore D Hughes
(11 Mar 1907 Chattanooga, Hamilton County, Tennessee, USA - 3 May 1979 Dallas, Dallas County, Texas, USA)
         │ + Ruby E Damron
(Abt 1910 Adair, Mayes County, Oklahoma, USA - Abt 2006 Sacramento, Sacramento County, California, USA)
         │ Crystal Vivian Bentley
(5 Mar 1922 - 17 Nov 1980 Gainesville, Cooke County, Tennessee, USA)
         │          ├─Donna Vivian Hughes
(18 Mar 1956 Cooke County, Texas, USA - 29 Jun 1976 Dallas, Dallas County, Texas, USA)
         │          └─Cynthia Ann Hughes
(6 Nov 1959 Cooke County, Texas, USA - 23 Dec 1996 bur.Era, Cookem TX)
         │           + Bob Bandehahamidi
         │           Billy Earl Springer
(20 Nov 1954 Alice, Jim Wells County, Texas, USA -          │           : 21 Aug 1997 Coryell County, Texas, USA)
         │           :          + Living
         │           + Living
         └─Lucius Elliston (Doc) Hughes
(19 Feb 1910 Oklahoma, USA - 4 Dec 1990 Sweeny, Brazoria County, Texas, USA)
          Helen Juanita Roach
(6 Mar 1915 Atoka, Atoka County, Oklahoma, USA - 20 Jul 1993 Sweeny, Brazoria County, Texas, USA)
                   └─Elinor Rose Hughes
(2 Nov 1937 Harris County, Texas, USA - 21 Oct 2014 bur.Sweeny, Brazoria County, Texas, USA)
                    James Harrison Shearer, Jr
(14 Nov 1934 Matagorda County, Texas, USA - 14 Aug 2016 bur.Sweeny, Brazoria County, Texas, USA)