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":
   └─Matthias S Leinen, Jr (3 Nov 1849 Tunsdorf, Mettlach, Saarland, Germany -     21 Feb 1929 Portsmouth, Shelby County, Iowa)
    Anna Marie Hammes (4 Aug 1854 Feyen, Near Trier, Rineland-Pfalz, Germany -     24 Jan 1912 St. Joseph Hospital, Omaha, Douglas County, Nebraska)(m. 25 Nov 1874)
       ├─Mary A Leinen (1875 Shelby County, Iowa - 1951 Portsmouth, Shelby County, Iowa)
       │ + Joseph Wilhelm Gau (3 Aug 1873 - 23 Mar 1952 Earling, Shelby County, Iowa)
       ├─Anna Rose Leinen (10 Feb 1877 Portsmouth, Shelby County, Iowa -        │ 30 Dec 1946 Westphalia, Shelby County, Iowa)
       │ Arnold Peter Gau (Westphalia, Cass Township, Shelby County, Iowa;16 May 1875 - 16 Feb 1952)
       │ (m. 18 Apr 1899)
       │    ├─Arnold C Gau (15 Oct 1900 Portsmouth, Shelby County, Iowa -        │    │ 10 Jun 1993 Wagner, Charles Mix County, South Dakota)
       │    │ Eva G (1902 - 1964 bur.Wagner, Charles Mix County, South Dakota)
       │    │    └─Cletus Joseph Gau (29 Nov 1934 - 4 Sep 1983 bur.Fort Pierre, Stanley County, South Dakota)
       │    ├─Andrew Mathias Gau (11 Nov 1902 At Home on Farm, Portsmouth, Shelby County, Iowa -        │    │ 10 Sep 1991 Baptist Memorial Home, Harlan, Shelby County, Iowa)
       │    │ Hazel Elizabeth Bendon (23 Sep 1901 Neola, Pottawattamie County, Iowa -        │    │ 27 Apr 1993 Myrtue Medical Center, Harlan, Shelby County, Iowa)(m. 30 Dec 1924)
       │    │    ├─Donna Gau (1927 Iowa - 10 Mar 2005 Harlan, Shelby County, Iowa)
       │    │    │ Living
       ├─Peter Joseph Leinen (Portsmouth, Shelby County, Iowa;19 Nov 1878 - 1882)
       ├─Michael Edward Leinen (7 Nov 1880 Iowa - 25 Aug 1962 Portsmouth, Shelby County, Iowa)
       │ Anna Katherine Sondag (14 Aug 1888 Iowa - 1965 Portsmouth, Shelby County, Iowa)
       │ (m. 28 Apr 1909 Portsmouth, Shelby County, Iowa)
       │    ├─Theodora Mary Leinen (21 May 1910 Portsmouth, Shelby County, Iowa -        │    │ 27 Aug 1999 Omaha, Douglas County, Nebraska)
       │    │ Eldred J Rosenthal (21 Feb 1911 Iowa - Jul 1986 Omaha, Douglas County, Nebraska)
       │    │ (m. 28 Nov 1935 Portsmouth, Shelby County, Iowa)
       │    ├─Mathias Leinen (Portsmouth, Shelby County, Iowa;1912 - 1912)
       │    ├─Edwin Mathias Leinen (Portsmouth, Shelby County, Iowa;7 Sep 1913 - 6 Oct 1921)
       │    ├─Marita Susanna Leinen (5 Jan 1916 Portsmouth, Shelby County, Iowa -        │    │ 3 Jan 1955 Omaha, Douglas County, Nebraska)
       │    │ Paul Bendon (25 Mar 2015 Portsmouth, Shelby County, Iowa -        │    │ Jan 1987 Omaha, Douglas County, Nebraska)(m. 31 May 1938 Portsmouth, Shelby County, Iowa)
       │    │     + Martha Ann Stonner
       │    ├─Augusta Margaret Leinen (20 May 1918 Portsmouth, Shelby County, Iowa -        │    │ 14 Nov 2003 Omaha, Douglas County, Nebraska)
       │    │ Wesley John Stamp, Jr (1916 Persia, Harrison County, Iowa - ??)
       │    │ (m. 16 Apr 1942 Portsmouth, Shelby County, Iowa)
       │    │     + James Michael Barker
       │    ├─Michael Theodore Leinen (Portsmouth, Shelby County, Iowa;13 Jul 1920 - 5 Jun 2000)
       │    │ Ramona Jane Slaven (19 Apr 1922 Portsmouth, Shelby County, Iowa - 31 Mar 1990 Bishop Clarkson        │    │ Memorial Hospital, Omaha, Douglas County, Nebraska)(m. 11 Feb 1942)
       │    │    │ Peggy Ann Kenkel (6 Jun 1952 Near Earling, Shelby County, Iowa -        │    │    │ 5 Apr 2011 University of Nebraska Medical Center, Omaha, Douglas County, Nebraska)
       │    │    └─Mary Ramona Leinen (20 Feb 1965 - 20 Feb 1965)
       │    ├─Mary Margaret Leinen (1 Dec 1922 Portsmouth, Shelby County, Iowa -        │    │ 20 Aug 2005 Omaha, Douglas County, Nebraska)
       │    │ Jack Langer (Neola, Pottawattamie County, Iowa - ??)(m. 5 Feb 1948 Portsmouth, Shelby County, Iowa)
       │    │    │ Charles Harris
       │    │    │    └─Charles E Langer (25 Jan 1993 - 9 Sep 2012 Auto Accident, Highway 31 South of        │    │    │     Interstate 80, Sarpy County, Nebraska)
       │    │    └─Julie Ann Langer
       │    │ Barbara Jeanne Kroeger (22 Dec 1926 Minden, Pottawattamie County, Iowa -        │    │ 29 Oct 1989 Bergan Mercy Hospital, Omaha, Douglas County, Nebraska)
       │    └─Rose Ann Margaret Leinen (25 Jun 1928 Portsmouth, Shelby County, Iowa -        │     23 Jul 1994 Omaha, Douglas County, Nebraska)
       │     Living
       ├─Margaret B Leinen (4 Dec 1882 Iowa - 27 Mar 1967 bur.Portsmouth, Shelby County, Iowa)
       │ Peter J Ohlinger (16 Jun 1883 - 2 Aug 1974 Portsmouth, Shelby County, Iowa)
       │ (m. 16 Apr 1907 Portsmouth, Shelby County, Iowa)
       │    ├─Peter M Ohlinger (12 Jul 1908 Shelby County, Iowa - 24 Nov 1978 Portsmouth, Shelby County, Iowa)
       │    ├─Emma Ohlinger (9 Jun 1910 Portsmouth, Shelby County, Iowa -        │    │ 7 Dec 1979 Harlan, Shelby County, Iowa)
       │    │ Cecil Andrew Monahan (28 Nov 1911 - 19 Nov 1987 Omaha, Douglas County, Nebraska)
       │    │ (m. 17 May 1932 Portsmouth, Shelby County, Iowa)
       │    │    └─Phillip J Monahan (14 Oct 1934 Portsmouth, Shelby County, Iowa -        │    │     19 Oct 2004 Las Vegas, Clark County, Nevada)
       │    ├─Leo J Ohlinger (3 Sep 1912 Portsmouth, Shelby County, Iowa -        │    │ 9 May 1978 Omaha, Douglas County, Nebraska)
       │    ├─Alfred M Ohlinger (24 Apr 1915 Portsmouth, Shelby County, Iowa -        │    │ 28 Jul 1970 San Diego County, California)
       │    │ + Marjorie Frances Feser (22 Sep 1920 Colorado - 4 Feb 1992 San Diego County, California)
       │    ├─Mary Ann Ohlinger (Portsmouth, Shelby County, Iowa;21 May 1917 - 10 Oct 1994)
       │    │ Floyd Feser (9 Sep 1917 - ??)(m. 1 Jun 1946 Omaha, Douglas County, Nebraska)
       │    └─Ernest M Ohlinger (6 Nov 1922 Portsmouth, Shelby County, Iowa - 20 Aug 1982 Virginia)
       ├─Peter Francis Leinen (26 Nov 1884 Iowa - 28 Jun 1972 Earling, Shelby County, Iowa)
       │ Mary Margaret Thielen (25 Jul 1893 Exira, Audubon County, Iowa - 8 Nov 1988 Little Flower Haven, Earling,        │ Shelby County, Iowa)(m. 9 Feb 1915 St. Mary's Catholic Church, Portsmouth, Shelby County, Iowa)
       │    ├─Agnes Catherine Leinen (10 Dec 1915 Portsmouth, Shelby County, Iowa - ??)
       │    │ + Leo B Hodapp (Westphalia, Shelby County, Iowa - ??)
       │    ├─Helena Mary Leinen (29 Nov 1917 Portsmouth, Shelby County, Iowa - ??)
       ├─Susanna Leinen (2 Feb 1887 Portsmouth, Shelby County, Iowa - Jan 1980 Nebraska)
       │ Mathias Olig (14 Oct 1882 Johnsburg, Fon du Lac County, Wisconsin -        │ 5 Oct 1961 Omaha, Douglas County, Nebraska)(m. 12 Oct 1909 Iowa)
       ├─Barbara Clara Leinen (Portsmouth, Shelby County, Iowa;9 Jul 1889 - 1890)
       ├─Mathias Leo Leinen (Portsmouth, Shelby County, Iowa;6 Feb 1891 - 9 Jul 1939)
       ├─John Jacob Leinen (26 Jul 1892 - 25 Jan 1984 Portsmouth, Shelby County, Iowa)
       ├─Magdalen Laura Leinen (25 Mar 1895 Portsmouth, Shelby County, Iowa -        │ Nov 1982 Omaha, Douglas County, Nebraska)
       │ Michael Daeges (18 Jun 1889 Portsmouth, Shelby County, Iowa - ??)
       │ (m. 4 Feb 1920 Portsmouth, Shelby County, Iowa)
       │    │ + Bob Becker
       │    ├─Margaret Daeges (2 Mar 1924 Portsmouth, Shelby County, Iowa -        │    │ 11 Nov 2005 Omaha, Douglas County, Nebraska)
       └─Albert Anthony Leinen (17 Jan 1899 Portsmouth, Shelby County, Iowa -         13 Mar 1988 Myrtue Medical Center, Harlan, Shelby County, Iowa)
        Helen Mary Hainley (Portsmouth, Shelby County, Iowa;13 Dec 1898 - 5 Aug 1985)
        (m. 10 Feb 1920 Portsmouth, Shelby County, Iowa)
           ├─Helen Mary Leinen (10 Jul 1922 Portsmouth, Shelby County, Iowa -            │ 6 Aug 2002 At Home, Portsmouth, Shelby County, Iowa)
           │ Carl Peter Stein (2 May 1918 Shelby County, Iowa - 1 Apr 1976 bur.Portsmouth, Shelby County, Iowa)
           │ (m. 12 Aug 1941 Portsmouth, Shelby County, Iowa)
           │    └─Donald Nicholas Stein (6 Dec 1955 Harlan, Shelby County, Iowa -            │     2 Jan 2015 Glenwood, Mills County, Iowa)
           │         + Jay Michael Seevers
           └─Delorse Ann Leinen (3 Apr 1925 Portsmouth, Shelby County, Iowa -             27 Mar 1997 Panama, Shelby County, Iowa)
            Vincent George Schmitz (21 Jan 1925 Panama, Shelby County, Iowa -             26 Feb 2001 Harlan, Shelby County, Iowa)