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":
Nancy Catherine Jones
(16 Aug 1856 Greene County, Tennessee, USA - 28 Dec 1930 Edmond, Oklahoma County, Oklahoma, USA)
Joseph Elbert Wattenbarger
(18 Feb 1855 Baileyton, Greene County, Tennessee, USA - 21 Nov 1930 Edmond, Oklahoma County, Oklahoma, USA)
         ├─Martha Isabella Wattenbarger
(10 Aug 1878 Greene County, Tennessee, USA - 16 Dec 1942 bur.Oklahoma City, Oklahoma County, Oklahoma, USA)
         ├─Thomas A Wattenbarger
(7 Jun 1876 Greene County, Tennessee, USA - 6 Sep 1954 bur.Oklahoma City, Oklahoma County, Oklahoma, USA)
         ├─Pearl D Wattenbarger
(Jul 1884 Kansas, USA - ??)
         ├─Mollie Alice Wattenbarger
(23 Oct 1886 Greene County, Tennessee, USA - 27 Jul 1971 bur.Oklahoma City, Oklahoma County, Oklahoma, USA)
         │ + D Clarence Patterson
(Mar 1876 Indiana, USA - 24 Nov 1958 bur.Oklahoma City, Oklahoma County, Oklahoma, USA)
         └─Clara Ada Wattenbarger
(6 Jul 1881 Baileytown, Greene County, Tennessee, USA - 28 Jun 1943 Gage County, Nebraska, USA)
          + John Alvah Bartholomew
(16 Aug 1876 Missouri, USA - 28 Mar 1941 Pawnee County, Nebraska, USA)