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: Lewis Leonidas Greenlee (24 Aug 1821 Mason County, West Virginia, USA - 23 Nov 1907 Corydon, Wayne County, Iowa, USA)
Mother: Hannah Maria Ferrell (8 Aug 1840 Pennsylvania, USA - 19 Feb 1906 Corydon, Wayne County, Iowa, USA)
Benjamin Adison Helt
(Dec 1869 Iowa, USA - 1948 bur.Humeston, Wayne County, Iowa, USA)
         ├─Edna E Helt
(Jun 1893 Clay, Wayne County, Iowa, USA - 15 Apr 1966 Lincoln, Lancaster County, Nebraska, USA)
         │ + Seth B Hughes
(15 Nov 1891 Wayne County, Iowa, USA - Sep 1973 Lincoln, Lancaster County, Nebraska, USA)
         ├─Ina Chrome Helt
(Nov 1894 Clay, Wayne County, Iowa, USA - 4 Feb 1920 Oklahoma, United States of America)
         ├─Everett Rea Helt
(16 Jul 1898 Clay, Wayne County, Iowa, USA - 1980 Wayne County, Iowa, USA)
         ├─Neva Helt
(2 Aug 1909 Clay, Wayne County, Iowa, USA - 8 Mar 1989)
         ├─Goldie Helt
(9 Nov 1903 Clay, Wayne County, Iowa, USA - 1978 Lucas County, Iowa, USA)
         │ + Howard D Petty
(1897 - 1974 Lucas County, Iowa, USA)
         └─May Helt
(27 May 1901 Clay, Wayne County, Iowa, USA - 15 Jan 1976 Los Angeles, Los Angeles County, California, USA)