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":
Charles James MARQUAND
(6 Oct 1869 Ballarat, Victoria, Australia - Dec 1943 Mount Magnet, Western Australia, Australia)
Mary Ellen BUTTON (Abt 1881 St. Breock, Cornwall, England - 1966 South Perth, Western Australia, Australia)
(m. 1914 Victoria, Australia)
└─Philip Harry MARQUAND (24 Oct 1914 North Fremantle, Western Australia, Australia - 19 Dec 1989 Perth, Western Australia, Australia)
Daphne Doreen COUSINS (10 Jul 1919 Arrino, Western Australia, Australia - 9 Nov 2005 Nedlands, Western Australia, Australia)(m. 1937 Murchison, Western Australia, Australia)
└─Annette Ellen MARQUAND (8 Nov 1940 Mount Magnet, Western Australia, Australia - 10 Jul 2007)
Allen O'SHANNASSY (28 Jan 1927 Dalwallinu, Western Australia, Australia - 22 Feb 1995 Kensington, Western Australia, Australia)
1869 - 1943 (74 years)
Mary Ellen BUTTON 
(Abt 1881 St. Breock, Cornwall, England - 1966 South Perth, Western Australia, Australia)
