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":
Absolom Grant Brummett
(26 Apr 1873 Washington County, Tennessee, USA - 27 Oct 1942 Elizabethton, Carter County, Tennessee, USA)
+ Hattie Priscilla Bacon
(18 Apr 1875 Washington County, Tennessee, USA - 24 Dec 1939 Elizabethton, Carter County, Tennessee, USA)
Mary Essie J. Bacon
(2 Jul 1869 Jonesborough, Washington County, Tennessee, USA - 25 Oct 1902 Washington County, Tennessee, USA)
         ├─Hattie A Brumit
(Mar 1897 Washington County, Tennessee, USA - ??)
         ├─Willie Keebler Bacon Brumett
(8 Nov 1901 Washington County, Tennessee, USA - May 1986 Johnson City, Washington County, Tennessee, USA)
         │ + Walter Clarence Cameron
(8 Nov 1892 Kentucky, USA - May 1965)
         ├─Zelmer Bacon Brummit
(Carter County, Tennessee, USA;16 Jan 1898 - 7 Jun 1899)
         └─Nancy Alma Brumit
(30 Mar 1899 Washington County, Tennessee, USA - 3 Jul 1975 Washington, District of Columbia, USA)
          + Ralph Stwart Depew
(24 Dec 1891 Jonesborough, Washington County, Tennessee, USA - 28 Feb 1970 Elizabethton, Carter County, Tennessee, USA)