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: William 'Arbuckle' Nelson (13 Sep 1807 Mason County, West Virginia, USA - 4 Aug 1876 Cambria, Wayne County, Iowa, USA)
Mother: Nancy Jane (Jenny) Greenlee (20 Nov 1811 Mason County, West Virginia, USA - 2 Jul 1890 Shawnee, Pottawatomie County, Oklahoma, USA)
Clark Greenlee Nelson
(15 May 1838 Madison County, Indiana, USA - 6 Oct 1895 Iowa City, Johnson County, Iowa, USA)
Ella Amelia Taylor
(18 Jan 1844 Lee County, Iowa, USA - 19 Jul 1914 Burden, Cowley County, Kansas, USA)
         ├─Emma Nelson
(30 Aug 1864 Cambria, Wayne County, Iowa, USA - 24 Mar 1940 Weld County, Colorado, USA)
         │ + Oscar Kline Rogers
(Abt 1853 Wisconsin, USA - Bef 1900)
         │ + William L Harris
(1861 Iowa, USA - 1938 bur.Nunn, Weld County, Colorado, USA)
         ├─Elmer J Nelson
(Wayne County, Iowa, USA;13 Aug 1867 - 14 Dec 1891)
         ├─Alta Louise Nelson
(13 Aug 1880 Corydon, Wayne County, Iowa, USA - 1960 Kansas, USA)
         │ + Edward Joseph Skinner
(Kansas, USA;9 Oct 1880 - 1949)
         ├─Alma Nelson
(14 Aug 1880 Corydon, Wayne County, Iowa, USA - 14 Aug 1929 Montgomery County, Kansas, USA)
         │ + Roy Lee Teegarden
(18 Aug 1877 Plano, Appanoose County, Iowa, USA - Oct 1967 Oklahoma City, Oklahoma County, Oklahoma, USA)
         ├─Nettie Nelson
(Apr 1872 Corydon, Wayne County, Iowa, USA - 1906 Wayne County, Iowa, USA)
         │ + William Morgan Parr
(1849 Indiana, USA - 1947 bur.Corydon, Wayne County, Iowa, USA)
         ├─Le Vanch Nelson
(8 Oct 1877 Corydon, Wayne County, Iowa, USA - 11 Feb 1933 Weld County, Colorado, USA)
         │ + Lewis E Goodell
(1870 Iowa, USA - 1934)
         └─Lillie D Nelson
(28 Jan 1870 Cambria, Wayne County, Iowa, USA - 6 Aug 1897 Imperial, Chase County, Nebraska, USA)
          + Francis Asbury Freeland, Jr
(9 Apr 1867 Corydon, Wayne County, Iowa, USA - 7 Jan 1941 Worth County, Missouri, USA)