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":
Virda R Bowman
(Washington County, Tennessee, USA;9 Apr 1873 - 6 Oct 1958)
         ├─Hobert Dell Bacon
(6 Jul 1898 Washington County, Tennessee, USA - Dec 1972 Montcalm County, Michigan, USA)
         │ Moreen L Pickett
(Abt 1907 Ionia County, Michigan, USA - 7 Sep 1988 Lansing, Ingham County, Michigan, USA)
         │          ├─Lavaun J Bacon
(1928 Jonesborough, Washington County, Tennessee, USA - 1957 bur.Lansing, Ingham County, Michigan, USA)
         │          │ + Edward Moses
(Lansing, Ingham County, Michigan, USA;18 May 1926 - 4 Oct 1972)
         │          └─Gloria Jean Bacon
(21 Feb 1931 Eureka, Clinton County, Michigan, USA - 20 Mar 1999 Lansing, Ingham County, Michigan, USA)
         │           + Living
         ├─Rollin May Bacon
(Jonesborough, Washington County, Tennessee, USA;8 Dec 1899 - 12 Apr 1934)
         └─Beverly Grant Bacon
(12 Jun 1905 Washington County, Tennessee, USA - Apr 1980 Phoenix, Maricopa County, Arizona, USA)
          Edith C Laughrun
(17 Dec 1908 Unicoi County, Tennessee, USA - 25 Apr 1992 Tennessee, USA)
                   ├─Richard Eugene Bacon
(Phoenix, Maricopa County, Arizona, USA;15 Apr 1929 - 9 Mar 1947)
                   └─Robert Lee Bacon
(15 Jul 1932 Maricopa County, Arizona, USA - 2 Aug 2005 Phoenix, Maricopa County, Arizona, USA)