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":
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┌──Arthur Thomas Bailey
(20 Nov 1906 Lookeba, Caddo County, Oklahoma, USA - 5 May 1965 Binger, Caddo County, Oklahoma, USA)
Lavone Bailey (1 Sep 1922 Oklahoma, USA - 23 Jul 1961 Rapid City, Pennington County, South Dakota, USA)
│ ┌──Benjamin Franklin Hawkins
(10 Jul 1881 Texas, USA - 18 Sep 1955 Anadarko, Caddo County, Oklahoma, USA)
└──Inez Sarah Hawkins
(26 Sep 1907 Taylor, Williamson County, Texas, USA - 5 Feb 1984 Sickles, Caddo County, Oklahoma, USA)
│ ┌──Rufus Madison Turnbough
(24 Sep 1861 Cooke County, Texas, USA - 2 Nov 1949 Quanah, Hardeman County, Texas, USA)
└──Minnie M Turnbough
(Jun 1886 Oklaunion, Wilbarger County, Texas, USA - 6 Jan 1916 Quanah, Hardeman County, Texas, USA)
└──Mattie Elizabeth Harvey
(8 Sep 1866 Allsboro, Colbert County, Alabama, USA - 7 Sep 1941 Quanah, Hardeman County, Texas, USA) =>