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":
Elizabeth Smith
(29 Mar 1878 Hope, Hempstead County, Arkansas, USA - 4 Dec 1948 Dallas, Dallas County, Texas, USA)
         ├─Myrtie Leah Kuykendall
(2 May 1896 Texas, USA - 9 May 1963 Mesquite, Dallas County, Texas, USA)
         │ + Julius Seeger
(10 Nov 1895 Gainesville, Cooke County, Texas, USA - 28 Dec 1961 Tyler, Smith County, Texas, USA)
         ├─Edna Pearl Kuykendall
(13 Mar 1898 Texas, USA - Jul 1980 El Dorado, Butler County, Kansas, USA)
         │ + Elijah Guy Cornwell
(Apr 1891 Murphy, Collin County, Texas, USA - Feb 1954 Shreveport, Caddo County, Louisiana, USA)
         ├─Ada Kuykendall
(Abt 1891 Texas, USA - ??)
         ├─Ernest Leslie Kuykendall
(8 Jun 1904 Van Zandt County, Texas, USA - 20 Nov 1982 Paris, Lamar County, Texas, USA)
         │ Rowena Evans
(13 Jan 1908 Texas, USA - 25 Mar 1989 Dallas, Dallas County, Texas, USA)
         │           + Gayle Quinn Foster
(30 Jun 1938 Dallas, Dallas County, Texas, USA - 4 Nov 2005)
         └─Aubrey Leon Kuykendall
(26 Jan 1908 Texas, USA - 21 Mar 1993 Dallas, Dallas County, Texas, USA)