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: Robert Eakin Nelson (Brown, Hancock County, Indiana, USA;11 Feb 1868 - 9 Sep 1926)
Mother: Idola Ann Lynam (6 Nov 1874 Gwynneville, Shelby County, Indiana, USA - 22 Feb 1950 Evansville, Vanderburgh County, Indiana, USA)
Palmer Vere Nelson
(19 Dec 1895 Brown, Hancock County, Indiana, USA - 11 Sep 1958 Madison County, Indiana, USA)
Corda Mae Lewis
(1900 Indiana, USA - 1993 bur.Henry County, Indiana, USA)
         ├─Marjorie E Nelson
(23 Oct 1918 Madison County, Indiana, USA - 25 Nov 2000 Anderson, Madison County, Indiana, USA)
         ├─Virginia R Nelson
(24 Jul 1917 Madison County, Indiana, USA - 15 Jul 2001)
         ├─Robert Nelson
(2 Sep 1922 Madison County, Indiana, USA - 26 Jun 2003 Monroe County, Indiana, USA)
         └─Ruth Eileen Nelson
(18 Oct 1924 Shirley, Hancock County, Indiana, USA - 20 Dec 1998 Anderson, Madison County, Indiana, USA)
          + James William Plummer
(18 Jun 1922 Paxton, Sullivan County, Indiana, USA - 6 Jan 2005)
          + Richard Hugh Millspaugh
(11 Apr 1923 Anderson, Madison County, Indiana, USA - 18 Feb 1944)