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":
Phebe Clarice CLARK
(6 May 1911 Maple Meadow, Raleigh, West Virginia, USA - 22 Feb 2010 Beckley, Raleigh, West Virginia, USA)
John Earl COOPER
(12 Dec 1902 Mercer, West Virginia, USA - 16 Oct 1957 Beckley, Raleigh, West Virginia, USA)
└─Ina Jean COOPER
(30 Dec 1929 Winding Gulf, Raleigh, West Virginia, USA - 25 Jun 2021 Whitehall, Franklin, Ohio, USA)
Ronald Ray SHARPS
(28 Feb 1924 Sandyville, Jackson, West Virginia, USA - 12 Jan 2018 Whitehall, Franklin, Ohio, USA)
1911 - 2010 (98 years)
John Earl COOPER 
(12 Dec 1902 Mercer, West Virginia, USA - 16 Oct 1957 Beckley, Raleigh, West Virginia, USA)