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":
Glen Dale OLSEN
(18 Jan 1912 Hooper, Weber, Utah, USA - 5 Sep 1982 Spokane, Spokane, Washington, USA)
Sarah LaRaida RICHINS (22 Mar 1911 Grouse Creek, Box Elder, Utah, USA - 30 Dec 2003 Bonners Ferry, Boundary, Idaho, USA)(m. 15 Nov 1930 Declo, Cassia, Idaho, USA)
├─Dale LaMar OLSEN (24 Mar 1935 Inkom, Bannock, Idaho, USA - DECEASED)
│ + Dorthy Naomi WATERS ( - DECEASED)(m. 22 Mar 1963 Manti, Sanpete, Utah, USA)
├─Nathalie OLSEN (2 Aug 1938 Bonners Ferry, Boundary, Idaho, USA - 8 Feb 2016 Bountiful, Davis, Utah, USA)
│ + William Lee GARRISON (10 Sep 1928 Hammond, Lake, Indiana, USA - 10 Jun 2016 Clearfield, Davis, Utah, USA)
│ (m. 13 Jun 1962 Salt Lake City, Salt Lake, Utah, USA)
└─Elda Rae OLSEN (26 Apr 1947 Creston, British Columbia, Canada - DECEASED)
+ Dan Irvin CARPENTER (1945 Idaho, USA - DECEASED)(m. 6 Jul 1966 Caldwell, Canyon, Idaho, USA)
1912 - 1982 (70 years)
Sarah LaRaida RICHINS 
(22 Mar 1911 Grouse Creek, Box Elder, Utah, USA -