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":
Mother: Eliza Kuykendall (Butler County, Kentucky, USA;12 Mar 1832 - 16 Oct 1883)
Charles David Kuykendall
(2 Jun 1869 Butler County, Kentucky, USA - 19 Aug 1939 Stephens County, Texas, USA)
Maud Jones
(11 Feb 1870 Kentucky, USA - 5 Sep 1937 Breckenridge, Stephens County, Texas, USA)
         ├─Hazel Marie Kuykendall
(3 Nov 1895 Kentucky, USA - 21 Dec 1992 Orange County, Florida, USA)
         │ + Delbert B Dudman
(23 Oct 1893 Carthage, Jasper County, Missouri, USA - 26 Jan 1970 Alice, Jim Wells County, Texas, USA)
         ├─Ernest Clyde Kuykendall
(25 Apr 1897 Butler County, Kentucky, USA - 2 Feb 1962 Houston, Harris County, Texas, USA)
         │ Sarah Lucille Davis
(26 Aug 1900 Texas, USA - 18 Oct 1987 Dallas County, Texas, USA)
         │          ├─Hazel Mildred Kuykendall
(28 Dec 1922 Wichita Falls, Wichita County, Texas, USA - 25 Aug 1998)
         │          └─James Clyde Kuykendall
(11 Jan 1925 Wichita Falls, Wichita County, Texas, USA -          │           19 Nov 1998 Pecan Plantation, Hood County, Texas, USA)
         ├─Mamie Kuykendall
(Aug 1898 Kentucky, USA - ??)
         └─Ruby Louise Kuykendall
(27 Nov 1908 Wichita Falls, Wichita County, Texas, USA - 15 Jan 1979 Fort Worth, Tarrant County, Texas, USA)
          + Tom Carnes
(7 Aug 1902 Atoka, Atoka County, Oklahoma, USA - 15 Jun 1978 Fort Worth, Tarrant County, Texas, USA)