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: Philip MADGE
(16 Apr 1877 New York, USA - 16 Aug 1947 Alameda, California, USA)
Mother: Lucy Eliza FLAVELL
(13 Oct 1879 New Jersey, USA - 21 May 1954 Alameda, California, USA)
Samuel Flavell MADGE
(4 Sep 1901 New Brunswick, Middlesex, New Jersey, USA - 15 Feb 1993 Benicia, Solano, California, USA)
Mazie Constance KILLEEN
(14 Nov 1895 California, USA - 25 Feb 1956 Alameda, California, USA)
└─Robert Killeen MADGE
(16 Nov 1925 San Francisco, California, USA - 6 Nov 2018 Walnut Creek, Contra Costa, California, USA)
1901 - 1993 (91 years)
(16 Nov 1925 San Francisco, California, USA - 6 Nov 2018 Walnut Creek, Contra Costa, California, USA)