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 Susan Wiley
(1 Oct 1876 Clay County, Alabama, USA - 18 Sep 1910 Quanah, Hardeman County, Texas, USA)
William 'Mack' Francis Harvey
(24 Mar 1871 Colbert County, Alabama, USA - 15 Feb 1950 Wichita Falls, Wichita County, Texas, USA)
         ├─Malissa (Lizzie) Harvey
(Quanah, Hardeman County, Texas, USA;12 Jul 1896 - 6 Aug 1974)
         │ Archie Holland Jarvis
(12 Mar 1892 Alabama, USA - 9 May 1976 Eldorado, Jackson County, Oklahoma, USA)
         │          ├─Frederick Martin Jarvis
(29 Oct 1925 Oklahoma, USA - 25 Jul 2006 Sunland, Los Angeles County, California, USA)
         │          ├─Melba Katheren Jarvis
(Abt 1921 Oklahoma, USA - ??)
         │          └─Thresa Gwindlyn Jarvis
(24 Oct 1922 Eldorado, Jackson County, Oklahoma, USA -          │           29 Nov 2006 bur.Eldorado, Jackson County, Oklahoma, USA)
         │           + James Donley Long
(10 Dec 1920 Eldorado, Jackson County, Oklahoma, USA - 10 Aug 2009 Altus, Jackson County, Oklahoma, USA)
         ├─Sallie Lee Harvey
(3 Feb 1900 Duke, Greer County, Oklahoma, USA - 30 Apr 1996 Pomona, Los Angeles County, California, USA)
         │ + John Smith Tillman
(19 Jan 1896 Texas, USA - 7 May 1991 Los Angeles County, California, USA)
         ├─Eunice Harvey
(Abt 1904 Oklahoma, USA - ??)
         ├─Wylie Harvey
(Abt 1907 Texas, USA - Abt 1925)
         └─J.Z. Harvey
(28 Jan 1910 Quanah, Hardeman County, Texas, USA - 17 Jun 1972 Temple, Bell County, Texas, USA)