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":
Father: John Griffin Nelson (Jun 1839 Indiana, USA - 28 Dec 1936 Crewe, Nottoway County, Virginia, USA)
Mother: Melissa Adelma Wright (2 Mar 1847 Maine, USA - 10 Mar 1945 Crewe, Nottoway County, Virginia, USA)
Elmer Brian Nelson
(16 Mar 1887 Osceola, Polk County, Wisconsin, USA - May 1968 Hillsdale, Columbia County, New York, USA)
Bertha Anna Getschel
(17 Mar 1887 Osceola, Polk County, Wisconsin, USA - 1936 bur.West Copake, Columbia County, New York, USA)
         ├─Olive M Nelson
(Abt 1917 Columbia County, New York, USA - 3 Apr 2011 bur.Martindale, Columbia County, New York, USA)
         │ + Leroy Emmet Michael
(25 May 1913 - 23 Apr 1977 bur.Martindale, Columbia County, New York, USA)
         ├─Griffin G Nelson
(Abt 1917 Columbia County, New York, USA - ??)
         ├─Helen Anna Nelson
(19 Apr 1932 Copake, Columbia County, New York, USA - 2 Nov 2005 Windsor, Broome County, New York, USA)
         │ + Living