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: Charley McGarvey Horton (5 Dec 1879 Farmersville, Collin County, Texas, USA - 20 Nov 1973 Childress, Childress County, Texas, USA)
Mother: Lula Eva Simpson (14 Aug 1889 New Boston, Bowie County, Texas, USA - 28 Jun 1981 Childress, Childress County, Texas, USA)
Leoma Doris (Fowler) Horton
(30 Jun 1910 Childress, Childress County, Texas, USA - 24 Jun 1993 Amarillo, Potter County, Texas, USA)
Troy Arnold Riddell
(11 Nov 1909 Kosciusko, Attala County, Mississippi, USA - 3 Jul 1976 Childress, Childress County, Texas, USA)
         ├─Vana Marie Riddell
(1 Sep 1934 Electra, Wichita County, Texas, USA - 26 Sep 2000 Amarillo, Potter County, Texas, USA)
         │ Edgar Allen Tobias
(10 May 1928 Marlin, Falls County, Texas, USA - 7 Feb 1998 Childress, Childress County, Texas, USA)
         ├─Troy Arnold (Bubba) Riddell
(19 Aug 1936 Quanah, Hardeman County, Texas, USA - 3 May 2013 Childress, Childress County, Texas, USA)
         │ Barbara Jean Nunley
(29 Aug 1943 - 22 Jan 1988 Lubbock, Lubbock County, Texas, USA)
         ├─Lilla Jeanene Riddell
(13 Mar 1940 Burbank, Los Angeles County, California, USA - 1 Jun 2007 Childress, Childress County, Texas, USA)
         │ Living
          Jackie Miller Smith
(Childress, Childress County, Texas, USA;7 Mar 1937 - 4 Mar 1999)
                   ├─Tammy Leoma Smith
(16 Jun 1962 Lubbock, Lubbock County, Texas, USA - 12 Aug 2009 Houston, Harris County, Texas, USA)
                   │ Jeffery D Stegall
(Abt 1961 - ??)