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":
Legend:
Helen Mary Hainley
(Portsmouth, Shelby County, Iowa;13 Dec 1898 - 5 Aug 1985)
Albert Anthony Leinen (17 Jan 1899 Portsmouth, Shelby County, Iowa - 13 Mar 1988 Myrtue Medical Center, Harlan, Shelby County, Iowa)(m. 10 Feb 1920 Portsmouth, Shelby County, Iowa)
   ├─Helen Mary Leinen (10 Jul 1922 Portsmouth, Shelby County, Iowa -    │ 6 Aug 2002 At Home, Portsmouth, Shelby County, Iowa)
   │ Carl Peter Stein (2 May 1918 Shelby County, Iowa - 1 Apr 1976 bur.Portsmouth, Shelby County, Iowa)
   │ (m. 12 Aug 1941 Portsmouth, Shelby County, Iowa)
   │    └─Donald Nicholas Stein (6 Dec 1955 Harlan, Shelby County, Iowa -    │     2 Jan 2015 Glenwood, Mills County, Iowa)