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":
Matilda Katherine (Tillie) Coker
(19 Mar 1867 Clinton, Anderson County, Tennessee, USA - 27 Jun 1953 Wichita County, Texas, USA)
         ├─Lela Ruth Hutcheson
(8 Mar 1889 Texas, USA - 4 Mar 1956 Tillman County, Oklahoma, USA)
         │ + Joseph Daniel "JD" Jones
(22 Apr 1880 Springtown, Parker County, Texas, USA - 17 Mar 1953 Tillman County, Oklahoma, USA)
         ├─Alford Stanley Hutcheson
(21 Mar 1884 Parker County, Texas, USA - 25 Apr 1952 Springtown, Parker County, Texas, USA)
         │ Mary Ruth Dillard
(8 Feb 1883 Willow Point, Wise County, Texas, USA - 7 Jun 1965 Weatherford, Parker County, Texas, USA)
         │          ├─Mary F Hutcheson
(Abt 1914 Springtown, Parker County, Texas, USA - ??)
         │          ├─Mildred Ruth Hutcheson
(31 Aug 1913 Springtown, Parker County, Texas, USA - 23 Mar 1989 Decatur, Wise County, Texas, USA)
         │          │ + Cleddie Nicholas Klein
(18 Mar 1911 Springtown, Parker County, Texas, USA - 11 Nov 1980 Fort Worth, Tarrant County, Texas, USA)
         │          ├─Alfred Stanley Hutcheson, Jr
(6 Mar 1924 Springtown, Parker County, Texas, USA -          │          │ 14 Aug 2002 Fort Worth, Tarrant County, Texas, USA)
         │          │ + Living
         │          ├─William Newton Hutchison
(9 Aug 1929 Springtown, Parker County, Texas, USA - 31 Aug 1970 Azle, Parker County, Texas, USA)
         │          └─John Dillard Hutcheson
(16 Apr 1934 Springtown, Parker County, Texas, USA - 18 Mar 1993 Tarrant County, Texas, USA)
         │           + Jatha Dawn Mosley
(27 Mar 1939 Alvord, Wise County, Texas, USA - 10 Mar 2005 Glen Rose, Somervell County, Texas, USA)
         ├─Harry L Hutcheson
(Nov 1885 Tennessee, USA - ??)
         ├─Laura A Hutcheson
(Dec 1892 Texas, USA - ??)
         ├─William Newton Hutcheson, Jr
(7 Jul 1894 Springtown, Parker County, Texas, USA - 27 Apr 1972 Dallas, Dallas County, Texas, USA)
         │ + Ada Celeste Hilton
(21 Jun 1902 Cleburne, Johnson County, Texas, USA - 27 Apr 1972 Dallas, Dallas County, Texas, USA)
         ├─Charles Thomas Hutcheson
(8 May 1896 Parker County, Texas, USA - 3 Mar 1919 San Antonio, Bexar County, Texas, USA)
         ├─Jennie Elizabeth Hutcheson
(2 Jun 1897 Texas, USA - 7 Aug 1976 Terrell, Kaufman County, Texas, USA)
         └─James Oscar Hutcheson
(15 Apr 1900 Texas, USA - 15 Dec 1918 bur.Goshen, Parker County, Texas, USA)