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: William CHING (Oct 1853 Torquay, Devon, England - Oct 1908 Newton Abbot, Devon, England)
Mother: Mary Ann FRAGALL (3 Feb 1853 Torquay, Devon, England - Sep 1929 Newton Abbot, Devon, England)
Gertrude May M. CHING
(Jan 1888 Torquay, Devon, England - Jun 1965 Newton Abbot, Devon, England)
Alfred William OULD (Torquay, Devon, England;Abt 1883 - 11 Jan 1939)(m. Oct 1909 Torquay, Devon, England)
   ├─Alfred William OULD (1910 Torquay, Devon, England - DECEASED)
   └─Frederick Richard OULD (Torquay, Devon, England;28 Apr 1916 - Jun 1991)