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":
Mary Ann Clifton
(11 Jan 1837 Missouri, USA - 2 Jan 1900 bur.Peter Pender, Franklin County, Arkansas, USA)
William Trewhitt
(Abt 1838 Morgan County, Tennessee, USA - 1874 Crawford County, Arkansas, USA)
         ├─Selestia Ann Trewhitt
(1 Dec 1862 Crawford County, Arkansas, USA - 26 May 1947 bur.Sevier County, Arkansas, USA)
         ├─Sarah Melinda Trewit
(6 May 1865 Crawford County, Arkansas, USA - 12 Dec 1954 Fort Smith, Sebastian County, Arkansas, USA)
         │ + John Cox
(1834 - 1896 bur.Ione, Logan County, Arkansas, USA)
         │ + Edmond J Curtis
(Abt 1860 New York, USA - ??)
         ├─Visa (Vicy) Jane Truhitt
(16 Oct 1865 Stone County, Missouri, USA - 8 Feb 1949 Douglas County, Missouri, USA)
         │ + Dr. John Lawrence
(Nov 1837 Indiana, USA - 1909 bur.Goodhope, Douglas County, Missouri, USA)
         │ + James I Aday
(Abt 1866 - ??)
         ├─Lillie Alice Trewhitt
(Apr 1872 Missouri, USA - 19 Oct 1956 Tuttle, Grady County, Oklahoma, USA)
         │ + William Auderson Brown
(15 Sep 1972 Franklin County, Arkansas, USA - 18 Aug 1948 Tuttle, Grady County, Oklahoma, USA)
         ├─Elizabeth Frances Trewhitt
(22 Mar 1874 Missouri, USA - 30 Apr 1947 Marysville, Yuba County, California, USA)
         │ + Francis M Chaffin
(Abt 1845 - ??)
         └─Serina Frances Trewhitt
(Feb 1870 Crawford County, Arkansas, USA - 22 Apr 1926 Franklin County, Arkansas, USA)
          + Sam Swafford
(Abt 1865 Illinois, USA - ??)