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: Frederick JEANES
(30 Aug 1830 Somerset, England - 1 Jun 1900 Ballarat, Victoria, Australia)
Mother: Eliza VIGAR
(12 Jun 1842 Pitney, Somerset, England - 19 Jul 1907 Ballarat, Victoria, Australia)
John Frederick Sydney JEANES
(11 Feb 1862 Ballarat, Victoria, Australia - 16 Oct 1948 Warragul, Victoria, Australia)
Emma Jane HUGHES
(3 Mar 1866 Buninyong, Victoria, Australia - 11 Jul 1948)
├─Laura Isobel JEANES
(1887 Carlton, Victoria, Australia - 1938 Royal Park, Victoria, Australia)
1862 - 1948 (86 years)
(12 Jun 1842 Pitney, Somerset, England - 19 Jul 1907 Ballarat, Victoria, Australia)