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":
Mother: Sidney Ann Horton (2 Aug 1858 Tishomingo County, Mississippi, USA - 28 May 1942 Fort Sumner, De Baca County, New Mexico, USA)
Ella Lee Cooper
(2 Jun 1882 Fannin, Goliad County, Texas, USA - 31 Jan 1936 Solomonville, Graham County, Arizona, USA)
Andrew Jackson Davis
(9 Mar 1887 Ballinger, Runnels County, Texas, USA - 9 Sep 1927 Safford, Graham County, Arizona, USA)
         ├─Tina Ann Davis
(4 Sep 1916 Dodson, Quay County, New Mexico, USA - 3 Jan 2003 Payson, Gila County, Arizona, USA)
         │ Dennis Gains Dunaway
(27 Jun 1906 Mountain View, Kiowa County, Oklahoma, USA - Oct 1978 Bisbee, Cochise County, Arizona, USA)
         │ :         └─3 children
         │ Haymour Edward Alexander Hansen
(30 Oct 1910 Everett, Snohomish County, Washington, USA -          │ 16 Nov 1971 Miami-Globe, Gila County, Arizona, USA)
         │          ├─Edward Allen Hansen
(2 Jul 1942 Phoenix, Maricopa County, Arizona, USA - 17 Jun 2009 Corning, Tehama County, California, USA)
         │          ├─Lloyd Paul Hansen
(13 May 1955 Globe, Gila County, Arizona, USA - 22 Jul 1992 Shasta County, California, USA)
         ├─Mamie Opal Davis
(11 Jun 1909 Dodson, Quay County, New Mexico, USA - 21 Feb 1985 Oroville, Butte County, California, USA)
         │ Champ Clark Palmer
(26 Sep 1910 Safford, Graham County, Arizona, USA - Mar 1983 Oroville, Butte County, California, USA)
         │          └─Ginger Lee Palmer
(18 Nov 1936 Solomonville, Graham County, Arizona, USA - 10 Sep 2007)
         ├─Thomas Lee Davis
(22 Jan 1911 Lubbock, Lubbock County, Texas, USA - Feb 1985 Buckeye, Maricopa County, Arizona, USA)
         ├─Viola May Davis
(6 May 1919 Florence, Pinal County, Arizona, USA - 19 Feb 1987 Riverside County, California, USA)
         │ + Aud Vee Touchstone
(9 Mar 1916 Texas, USA - 10 Mar 1962 Riverside County, California, USA)
         ├─Mannie Davis
(Tucumcari, Quay County, New Mexico, USA;1913 - ??)
         └─Gerald Jackson Davis
(2 Jan 1925 Safford, Graham County, Arizona, USA - 15 Nov 1987 Shasta County, New Mexico, USA)
          + Living