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":
Ruth Celia HOWARD
(Between 1898 and 1902 North Melbourne, Victoria, Australia - 21 Nov 1970 Coogee, New South Wales, Australia)
Albert Henry Newson LING
(1893 Clifton Hill, Victoria, Australia - 23 Apr 1934 Essendon, Victoria, Australia)
└─Albert Henry Newson LING
(6 May 1922 North Melbourne, Victoria, Australia - 27 Nov 1991 Long Jetty, New South Wales, Australia)
Norma PANKHURST
(27 Apr 1930 Sydney, New South Wales, Australia - 2005 New South Wales, Australia)
1902 - 1970 (~ 72 years)
Albert Henry Newson LING 
(1893 Clifton Hill, Victoria, Australia - 23 Apr 1934 Essendon, Victoria, Australia)