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":
Samuel J Wattenbarger
(Abt 1834 Washington County, Tennessee, USA - Bef 1900 Indian Territory, USA)
         ├─Caldonia D Wattenbarger
(15 Mar 1868 Greene County, Missouri, USA - 19 Sep 1925 bur.Big Cabin, Craig County, Oklahoma, USA)
         │ + Hiram Thompson Elliott, Sr
(May 1858 Indian Territory, USA - Jul 1915 bur.Big Cabin, Craig County, Oklahoma, USA)
         ├─Cora M Wattenbarger
(1869 Greene County, Missouri, USA - ??)
         ├─Minnie J Wattenbarger
(Jan 1872 Greene County, Missouri, USA - ??)
         ├─Versalia Wattenbarger
(Jan 1877 Texas, USA - ??)
         ├─Ollie Wattenbarger
(Abt 1878 Texas, USA - ??)
         ├─Lulia M Wattenbarger
(Abt 1880 Denton County, Texas, USA - ??)
         ├─Cordelia Wattenberger
(Jan 1875 Greene County, Missouri, USA - ??)
         └─Mattie Wattenbarger
(Dec 1881 Indian Territory, USA - ??)