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":
Francis BOWDEN
(30 Jul 1876 Moonta, South Australia, Australia - 20 Jun 1918 Kalgoorlie, Western Australia, Australia)
Sophia Jessie BURTON (15 Jun 1876 Yelta, South Australia, Australia - 9 Mar 1915 Kalgoorlie, Western Australia, Australia)(m. 16 Jan 1901 Coolgardie, Western Australia, Australia)
└─Samuel BOWDEN (Kalgoorlie, Western Australia, Australia;11 Feb 1908 - 10 Mar 2001)
Violet Elizabeth MARTIN (Boulder, Western Australia, Australia;1910 - 5 Nov 2001)
(m. 27 Apr 1929 Boulder, Western Australia, Australia)
└─Glenice Francis BOWDEN (18 Feb 1931 East Coolgardie, Western Australia, Australia - 26 Aug 1968 Kalgoorlie, Western Australia, Australia)
Raymond Thomas SAUNDERS (23 Feb 1926 Orange, New South Wales, Australia - DECEASED Esperance, Western Australia, Australia)(m. 1950 Coolgardie, Western Australia, Australia)
1876 - 1918 (41 years)
Sophia Jessie BURTON 
(15 Jun 1876 Yelta, South Australia, Australia -