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":
Jacob Douglass
(1798 Washington County, Tennessee, USA - Bef 1870)
Mary (Polly) Bacon
(Abt 1805 Washington County, Tennessee, USA - Bef 1870)
         ├─Eleanor Douglass
(1827 Tennessee, USA - ??)
         ├─John B Douglass
(Abt 1829 Tennessee, USA - ??)
         ├─Julia E Douglass
(Abt 1837 Washington County, Tennessee, USA - ??)
         ├─Madison Douglass
(1840 Washington County, Tennessee, USA - ??)
         ├─Sarah Douglass
(1843 Tennessee, USA - ??)
         ├─Nancy Douglass
(Mar 1845 Tennessee, USA - ??)
         ├─Jacob L Douglass
(1847 Washington County, Tennessee, USA - 1901 bur.Proffitt Family Plot, Colonial Heights, Sullivan County, Tennessee, USA)
         │ + Sarah Ann Strickler
(Sullivan County, Tennessee, USA;2 Oct 1855 - 18 Jul 1928)
         ├─David N. Douglass
(1850 Tennessee, USA - Bef 1860)
         └─Elbert Sevier Douglass
(Sullivan County, Tennessee, USA;9 Nov 1852 - 23 Apr 1917)
          + Sarah Hall
(30 Nov 1846 Sullivan County, Tennessee, USA - 7 Apr 1930 Washington County, Tennessee, USA)