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 Baulkham PETTIT
(1786 Brighton, Sussex, England - 19 Jun 1845 Busselton, Western Australia, Australia)
Mother: Rebecca LONG
(1783 Kent, England - 9 Jul 1879 Busselton, Western Australia, Australia)
David Henry PETTIT
(Abt 1822 England - 2 Mar 1862 Busselton, Western Australia, Australia)
Mary Ann WHITE
(19 Jun 1834 Perth, Western Australia, Australia - 2 Nov 1920)
├─William John PETTIT
(York, Western Australia, Australia;17 Jan 1852 - 22 Dec 1930)
Abt 1822 - 1862 (~ 40 years)
(1786 Brighton, Sussex, England - 19 Jun 1845 Busselton, Western Australia, Australia)