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":
Grace Euphemia Kelly
(26 Jan 1891 Bledsoe County, Tennessee, USA - 5 Feb 1960 bur.Jasper, Marion County, Tennessee, USA)
Arlis Barger
(4 Sep 1887 Big Spring, Meigs County, Tennessee, USA - ?? bur.Jasper, Marion County, Tennessee, USA)
         ├─Infant girl Barger
(Marion County, Tennessee, USA;6 Jun 1931 - 6 Jun 1931)
         ├─Virginia Barger
(16 Feb 1923 Marion County, Tennessee, USA - 16 Feb 2017 bur.Jasper, Marion County, Tennessee, USA)
         │ + Edgar Barnabus Alder
(24 Oct 1921 Marion County, Tennessee, USA - 4 Sep 1985 Jasper, Marion County, Tennessee, USA)
         ├─Frances Barger
(18 Feb 1927 Marion County, Tennessee, USA - 10 Apr 2011 Jasper, Marion County, Tennessee, USA)
         │ + Herschel Phillips
(23 Jun 1925 Jasper, Marion County, Tennessee, USA - 19 Sep 1987 bur.Jasper, Marion County, Tennessee, USA)
         │ + Living
         └─Mary Kelly Barger
(1 Dec 1921 South Pittsburg, Marion County, Tennessee, USA - 5 Jan 1928 Whitwell, Marion County, Tennessee, USA)