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: Robert Alfred DIXON (17 Aug 1884 Fremantle, Western Australia, Australia - 12 Nov 1964 South Fremantle, Western Australia, Australia)
Mother: Ada WRIGHT (Fremantle, Western Australia, Australia;13 Sep 1888 - 15 May 1972)
Ada Isobel DIXON
(6 Jun 1912 Williams, Western Australia, Australia - 5 Oct 2011 Swan View, Western Australia, Australia)
Henry Clarence FITZGERALD (14 Oct 1907 Midland Junction, Western Australia, Australia - 11 Oct 1997 Perth, Western Australia, Australia)(m. 29 Jan 1929 Fremantle, Western Australia, Australia)
   └─Lurline Dawn FITZGERALD (11 Sep 1929 Western Australia, Australia -     3 Jan 1989 Mandurah, Western Australia, Australia)