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":
Father: Wilson Wattenbarger (Bradley County, Tennessee, USA;31 Aug 1842 - 23 Oct 1903)
Mother: Mary Ann Elizabeth Bacon (27 Jun 1844 Washington County, Tennessee, USA - 28 May 1926 Cleveland, Bradley County, Tennessee, USA)
Walter E Wattenbarger
(21 Jul 1878 Bradley County, Tennessee, USA - 24 Jun 1936 Cleveland, Bradley County, Tennessee, USA)
Ethel Taylor
(20 Mar 1883 Tennessee, USA - 12 Apr 1956 Cleveland, Bradley County, Tennessee, USA)
         ├─Thomas Owen Wattenbarger
(27 Nov 1911 Bradley County, Tennessee, USA - 30 Nov 1996 Charleston, Bradley County, Tennessee, USA)
         │ Patricia Jessemma Chambers
(Cleveland, Bradley County, Tennessee, USA;20 Mar 1916 - 16 Sep 1999)
         │          ├─Alice Elizabeth Wattenbarger
(19 Jan 1938 Bradley County, Tennessee, USA -          │          │ 29 Jul 2005 Church Hill, Hawkins County, Tennessee, USA)
         └─Forrest W Wattenbarger
(26 Apr 1905 Bradley County, Tennessee, USA - Sep 1972 Nashville, Davidson County, Tennessee, USA)
          + Beulah Bell Bird
(11 Dec 1910 Cleveland, Bradley County, Tennessee, USA - 19 Sep 2002 Nashville, Davidson County, Tennessee, USA)