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":
Alma May HAWKINS
(22 Aug 1922 Merewether, New South Wales, Australia - 29 Aug 1982 Newcastle, New South Wales, Australia)
Wallace Harold BEACROFT (20 Oct 1922 Cooks Hill, New South Wales, Australia - 8 Aug 2012 Waratah, New South Wales, Australia)(m. 26 Feb 1944 Wickham, New South Wales, Australia)
Joseph Stephen SLIWA (24 Feb 1942 Walldürn, Neckar-Odenwald-Kreis, Baden-Württemberg, Germany - : 16 Aug 2020 Heddon Greta, New South Wales, Australia)
Michael MEREFIELD (18 Sep 1950 Newcastle, New South Wales, Australia - 18 Jun 2002 Barnsley, New South Wales, Australia)(m. 15 Nov 1969 Newcastle, New South Wales, Australia)
└─Amanda Jane MEREFIELD (15 Jun 1970 Waratah, New South Wales, Australia - 16 Aug 2020 Heddon Greta, New South Wales, Australia)
1922 - 1982 (60 years)
Wallace Harold BEACROFT 
(20 Oct 1922 Cooks Hill, New South Wales, Australia -