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":
Mattie Calhoun
(12 Sep 1888 Arkansas, USA - 6 Jan 1967 Wichita Falls, Wichita County, Texas, USA)
Benjamin Harrison Richmond
(28 Dec 1888 Hon, Scott County, Arkansas, USA - 23 Mar 1961 El Paso, El Paso County, Texas, USA)
         ├─Jack Richmond
(Wichita Falls, Wichita County, Texas, USA;25 May 1910 - 26 Nov 1960)
         │ Zora Beatrice McClendon
(1912 Texas, USA - ??)
         │          └─Vivian Ruth Richmond
(23 Jan 1931 Wichita Falls, Wichita County, Texas, USA - 27 Mar 2012 Arkansas, USA)
         │           + Living
         │           + Arthur L Wassinger
(1 May 1928 Portland, Multnomah County, Oregon, USA - 28 Sep 2005 Katy, Harris County, Texas, USA)
         │           + Howard Washington Cobb
(29 Jun 1927 Corsicana, Navarro County, Texas, USA -          │           30 Apr 2001 Garland, Dallas County, Texas, USA)
         ├─Juanita Elizabeth Richmond
(12 Apr 1912 Wichita Falls, Wichita County, Texas, USA - 12 Jan 1998 Waco, McLennan County, Texas, USA)
         │ Solomon Andrew Sims
(11 Jul 1905 Texas, USA - 25 Dec 1980 Cleburne, Johnson County, Texas, USA)
         │          ├─Mary Elizabeth Sims
(20 Aug 1927 Wichita Falls, Wichita County, Texas, USA - 29 Jun 2014 Waco, McLennan County, Texas, USA)
         │          │ Bobby Duckett
         │          │ :         └─Rickey W Duckett
(27 Nov 1956 Fort Worth, Tarrant County, Texas, USA - 2 Sep 1996 Waco, McLennan County, Texas, USA)
         │          ├─Thelma Ruth Sims
(Wichita Falls, Wichita County, Texas, USA;22 Jan 1929 - 18 Feb 1929)
         │          ├─Priscilla Ann Sims
(4 Jun 1931 Wichita Falls, Wichita County, Texas, USA - 2 Dec 2007 Cleburne, Johnson County, Texas, USA)
         │          │ Living
         │           Living
         │                    ├─Steven Michael Sims
(16 Jul 1962 Baytown, Harris County, Texas, USA - 27 Apr 1992 Austin, Travis County, Texas, USA)
         │                     + Living
         │                     + Living
         ├─Vera Richmond
(6 May 1916 Wichita Falls, Wichita County, Texas, USA - 2007 Long Beach, Los Angeles County, California, USA)
         │          └─Aubrey Lynn Marshall, Jr.
(23 Feb 1949 Fort Worth, Tarrant County, Texas, USA - 24 Jun 2009 California, USA)
         ├─J D Richmond
(20 Aug 1919 Wichita Falls, Wichita County, Texas, USA - 13 Sep 2007 Garland, Dallas County, Texas, USA)
         │ + Living
         ├─Neomia Louise Richmond
(16 Mar 1921 Wichita Falls, Wichita County, Texas, USA - 19 May 2005 Mission Viejo, Orange County, California, USA)
         │ + Chester R King
(13 Jan 1918 - 13 Mar 1999 Long Beach, Los Angeles County, California, USA)
         │ + Tony Howard Baldwin
(20 May 1914 - 15 May 1996)
         ├─Paul Samuel Richmond
(9 Jul 1923 Wichita Falls, Wichita County, Texas, USA - 6 Apr 2007 Spring, Montgomery County, Texas, USA)
         │ Living
         │          ├─Paul Lee Richmond
(Fort Worth, Tarrant County, Texas, USA;6 Jul 1943 - 7 Oct 2009)
         │          │ Living