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":
Nicholas THOMAS
(Abt 1804 Mylor, Cornwall, England - DECEASED)
Mary Ann SINCOCK (Abt 1810 Mylor, Cornwall, England - DECEASED)(m. 17 Feb 1833 St. Gluvias, Cornwall, England)
└─Mary THOMAS (Abt 1835 Mylor, Cornwall, England - DECEASED)
John Henry RULE (Abt 1841 Redruth, Cornwall, England - DECEASED)(m. 11 Oct 1862 Mylor, Cornwall, England)
└─Minnie RULE (Mylor, Cornwall, England;18 Nov 1865 - 9 May 1945)
William John BULL (Midsomer Norton, Somerset, England;2 Apr 1852 - 20 Nov 1924)
(m. 26 Dec 1888 Mylor, Cornwall, England)
Abt 1804 - DECEASED
Mary Ann SINCOCK 
(Abt 1810 Mylor, Cornwall, England - DECEASED)(m. 17 Feb 1833 St. Gluvias, Cornwall, England)