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: Benjamin Harrison Richmond (28 Dec 1888 Hon, Scott County, Arkansas, USA - 23 Mar 1961 El Paso, El Paso County, Texas, USA)
Mother: Mattie Calhoun (12 Sep 1888 Arkansas, USA - 6 Jan 1967 Wichita Falls, Wichita County, Texas, USA)
Jack Richmond
(Wichita Falls, Wichita County, Texas, USA;25 May 1910 - 26 Nov 1960)
         └─Vivian Ruth Richmond
(23 Jan 1931 Wichita Falls, Wichita County, Texas, USA - 27 Mar 2012 Arkansas, USA)
          + Living
          + Arthur L Wassinger
(1 May 1928 Portland, Multnomah County, Oregon, USA - 28 Sep 2005 Katy, Harris County, Texas, USA)
          + Howard Washington Cobb
(29 Jun 1927 Corsicana, Navarro County, Texas, USA -           30 Apr 2001 Garland, Dallas County, Texas, USA)