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":
Martha Louellen Doty
(26 Apr 1885 Missouri, USA - 21 Aug 1934 Grand Saline, Van Zandt County, Texas, USA)
Madison Monroe Truhitte
(19 Dec 1883 Barry County, Missouri, USA - 25 Feb 1971 Compton, Los Angeles County, California, USA)
         ├─Julius Andrew (Jay) Truhitte
(28 Jun 1907 Purdy, Barry County, Missouri, USA - 31 Jul 1979 Houston, Harris County, Texas, USA)
         │ Ida Irene Osborne
(8 Aug 1915 Missouri, USA - 10 Jun 1994 Houston, Harris County, Texas, USA)
         │           + Joanne Stripling
(15 Aug 1939 Houston, Harris County, Texas, USA - 7 Mar 2008 Joshua, Johnson County, Texas, USA)
         └─Jewell Anna "Micky" Truhitte
(15 Jul 1905 Jenkins, Barry County, Missouri, USA - 20 Aug 1995 Fort Collins, Larimer County, Colorado, USA)
          + Royal Collins
(12 Jul 1898 Groesbeck, Limestone County, Texas, USA - 8 Jan 1941 Houston, Harris County, Texas, USA)