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":
Peter JACOBY
(24 Aug 1807 Luxembourg - 22 Dec 1883 Honey Creek, Sauk, Wisconsin, USA)
Katherina SCHMALY (29 Apr 1828 Frankfurt am Main, Hessen, Germany - 12 Oct 1898 Honey Creek, Sauk, Wisconsin, USA)
(m. Roxbury, Dane, Wisconsin, USA)
└─John Peter JACOBY (May 1869 Prairie du Sac, Sauk, Wisconsin, USA - Between 1943 and 1945 Enid, Garfield, Oklahoma, USA)
Lucy J HARTZ (13 Jul 1872 Lake City, Goodhue, Minnesota, USA - 1 May 1967 Ponca City, Kay, Oklahoma, USA)
(m. 8 Oct 1891)
└─Walter William JACOBY (12 Aug 1892 Oklahoma, USA - 14 Feb 1971 Houston, Harris, Texas, USA)
Lois Ethel ARNOLD (15 Apr 1903 Coin, Page, Iowa, USA - 15 Jan 1983 Houston, Harris, Texas, USA)
(m. 1921 Ponca City, Kay, Oklahoma, USA)
└─James Leon JACOBY (22 Jul 1925 Ponca City, Kay, Oklahoma, USA - 11 Oct 2019)
1807 - 1883 (76 years)
Katherina SCHMALY 
(29 Apr 1828 Frankfurt am Main, Hessen, Germany - 12 Oct 1898 Honey Creek, Sauk, Wisconsin, USA)
