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":
Susan Sharp King
(4 Mar 1822 Washington County, Tennessee, USA - 20 Jun 1904 Macoupin County, Illinois, USA)
Jeremiah Bacon
(7 Mar 1824 Washington County, Tennessee, USA - 31 Jan 1868 Macoupin County, Illinois, USA)
         ├─Mary J Bacon
(27 Jul 1848 Washington County, Tennessee, USA - 21 Mar 1906 bur.Greene County, Illinois, USA)
         │ + Robert R Cooper
(Jan 1828 Kentucky, USA - ??)
         ├─Miriam Amanda (Arra) Bacon
(24 Feb 1860 Macoupin County, Illinois, USA - 10 Jan 1933 Normal, McLean County, Illinois, USA)
         │ + James Polk Casteel
(9 Aug 1854 Knox County, Tennessee, USA - 7 Apr 1929 Barr, Macoupin County, Illinois, USA)
         ├─Leah Catherine Bacon
(15 Jan 1850 Washington County, Tennessee, USA - Mar 1915 Wray, Yuma County, Colorado, USA)
         │ + George Alexander Stults
(1 Oct 1843 Illinois, USA - 28 Apr 1878 Macoupin County, Illinois, USA)
         │ + Jack S Finn
(1 Jan 1848 Green County, Kentucky, USA - 20 Sep 1900 Wray, Yuma County, Colorado, USA)
         ├─John Nimon Bacon
(19 Nov 1846 Washington County, Tennessee, USA - 19 Jul 1936 Hettick, Macoupin County, Illinois, USA)
         │ Lucinda Alice Ribble
(18 Jul 1856 Illinois, USA - 10 May 1935 Hettick, Macoupin County, Illinois, USA)
         │          ├─Mary C Bacon
(Mar 1877 Macoupin County, Illinois, USA - ??)
         │          ├─Elbert Edward Bacon
(1 Oct 1881 Macoupin County, Illinois, USA - 6 Mar 1966 San Diego, San Diego County, California, USA)
         │          │ Jean Marrow Halliday
(26 Apr 1888 Scotland - 8 Jan 1981 San Diego, San Diego County, California, USA)
         │          │          └─Ila Fern Bacon
(5 Nov 1922 Hettick, Macoupin County, Illinois, USA - 22 Jan 2006)
         │          └─Rose Belle Bacon
(8 Sep 1887 Macoupin County, Illinois, USA - 29 Aug 1987 San Diego, San Diego County, California, USA)
         │           + George Robinson
(Abt 1886 Illinois, USA - ??)
         ├─Elijah E Bacon
(15 May 1856 Woodson, Morgan County, Illinois, USA - 28 Jul 1936 Murrayville, Morgan County, Illinois, USA)
         ├─Martha Ann Bacon
(1844 Washington County, Tennessee, USA - 24 Sep 1898 bur.Barr, Macoupin County, Illinois, USA)
         │ + Robert Valentine Garrison
(Nov 1843 Green County, Kentucky, USA - 1915 bur.Barr, Macoupin County, Illinois, USA)
         └─Jesse H Bacon
(Abt 1855 Washington County, Tennessee, USA - 11 Aug 1884 bur.Macoupin County, Illinois, USA)