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":
Nannie D Craig
(Jun 1869 Tennessee, USA - 8 Jun 1952 Weatherford, Parker County, Texas, USA)
Charles LaFayette Hutcheson
(28 Jul 1863 Hamilton County, Tennessee, USA - 3 Apr 1964 Weatherford, Parker County, Texas, USA)
         ├─Charles Lester Hutcheson
(1 Apr 1893 Parker County, Texas, USA - 15 Aug 1978 Weatherford, Parker County, Texas, USA)
         │ + Ora ??
(Abt 1894 Texas, USA - ??)
         ├─Ernest O Hutcheson
(18 Sep 1895 Springtown, Parker County, Texas, USA - 2 Oct 1993 Weatherford, Parker County, Texas, USA)
         ├─Edwin Lafayette Hutcheson
(21 May 1898 Parker County, Texas, USA - 6 Sep 1985 Weatherford, Parker County, Texas, USA)
         ├─Margaret Thelma Hutcheson
(8 Jun 1901 Springtown, Parker County, Texas, USA - 21 Aug 1989 bur.Aledo, Parker County, Texas, USA)
         │ + Floyd Johnson Brown
(1 Jul 1895 Aledo, Parker County, Texas, USA - 12 Jul 1974 Weatherford, Parker County, Texas, USA)
         ├─Ethel Ruth Hutcheson
(12 Jun 1903 Parker County, Texas, USA - 27 Sep 1988 Weatherford, Parker County, Texas, USA)
         ├─Luther Eli Hutcheson
(29 Oct 1905 Parker County, Texas, USA - 1 Sep 1984 Weatherford, Parker County, Texas, USA)
         ├─James Wade Hutcheson
(24 Mar 1888 Springtown, Parker County, Texas, USA - 8 Oct 1968 Weatherford, Parker County, Texas, USA)
         │ Eda Estella Lavender
(Apr 1888 Texas, USA - 17 Feb 1926 Wichita Falls, Wichita County, Texas, USA)
         │          └─George Charles Hutcheson
(8 Mar 1910 Springtown, Parker County, Texas, USA - 24 Oct 1994 Dallas, Dallas County, Texas, USA)
         │           + Helen Hatch
(30 Oct 1912 Fulton County, Illinois, USA - 21 Feb 1984 Dallas, Dallas County, Texas, USA)
         └─William Hershel Hutcheson
(6 Aug 1890 Springtown, Parker County, Texas, USA - 17 May 1971 Fort Worth, Tarrant County, Texas, USA)
          + Gladys Everett
(Weatherford, Parker County, Texas, USA;26 Dec 1891 - 19 Jun 1964)