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 James PIGGOTT (29 Jan 1856 Australind, Western Australia, Australia - 16 Jul 1930 Bunbury, Western Australia, Australia)
Mother: Mercy Rose MARRIOTT (11 Jan 1865 Brunswick Junction, Western Australia, Australia - 4 May 1940 Bunbury, Western Australia, Australia)
Daisy Beatrice PIGGOTT
(13 Dec 1889 Australind, Western Australia, Australia - 6 May 1969 Bunbury, Western Australia, Australia)
Charles OFFER (7 Nov 1866 Benger, Western Australia, Australia - 25 May 1939 Perth, Western Australia, Australia)
   └─Leslie Charles OFFER (16 Nov 1913 Wellington, Western Australia, Australia -     8 Feb 1995 bur.Harvey, Western Australia, Australia)
    Beryl Ivy PAYNE (27 Aug 1921 Irwin, Western Australia, Australia -     25 Jan 2001 Harvey, Western Australia, Australia)(m. 1942 Swan, Western Australia, Australia)