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: Wilson Wattenbarger (Greene County, Tennessee, USA;29 Nov 1820 - 13 Aug 1889)
Nancy Catherine Archer
(26 Jan 1850 Washington County, Tennessee, USA - 15 Jan 1889 Greene County, Tennessee, USA)
         ├─Eliza Jane Wattenbarger
(10 Sep 1872 Greene County, Tennessee, USA - 24 Jun 1907 bur.Greene County, Tennessee, USA)
         │ + W E Murdock
         │ + William S Moore
(Jun 1869 Greene County, Tennessee, USA - ??)
         ├─Wilson Wattenbarger
(23 Oct 1876 Greene County, Tennessee, USA - 13 Jul 1898 bur.Greene County, Tennessee, USA)
         ├─Lucretia Wattenbarger
(6 Sep 1887 Greene County, Tennessee, USA - 8 Feb 1921 Baileyton, Greene County, Tennessee, USA)
         │ + William Thomas Crumly
(13 Oct 1883 Greene County, Tennessee, USA - 26 Jan 1959 Clermont County, Ohio, USA)
         ├─Harrison Wattenbarger
(23 Nov 1883 Greene County, Tennessee, USA - 18 Mar 1905 bur.Greene County, Tennessee, USA)
         └─George Newton Wattenbarger
(6 Jan 1881 Baileyton, Greene County, Tennessee, USA - 16 Feb 1939 Greeneville, Greene County, Tennessee, USA)