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: Ridley Draper (30 Dec 1825 - 10 Jun 1873 Putnam County, Tennessee, USA)
Mother: Rebecca Kuykendall (13 Jan 1828 Jackson County, Tennessee, USA - 19 May 1905 Putnam County, Tennessee, USA)
Oliver Newton Draper
(1 Jan 1857 Smyrna, Putnam County, Tennessee, USA - 8 Jan 1932 Putnam County, Tennessee, USA)
Mary Olive Cummins
(25 Apr 1857 Cummins Falls, Jackson County, Tennessee, USA - 8 Oct 1949 Cookeville, Putnam County, Tennessee, USA)
         ├─William Gilbert Draper
(Cookeville, Putnam County, Tennessee, USA;13 Aug 1891 - 8 Sep 1963)
         │ Carrie Mable Byrne
(20 Nov 1892 Granville, Jackson County, Tennessee, USA - 17 Nov 1966 Cookeville, Putnam County, Tennessee, USA)
         │          ├─Newton B Draper
(1915 Tennessee, USA - ??)
         │          └─Dorthea Draper
(9 Nov 1917 Cookeville, Putnam County, Tennessee, USA - 18 Mar 2003 Nashville, Davidson County, Tennessee, USA)
         │           William James Witherspoon
(13 Mar 1917 Cedar Hill, Dallas County, Texas, USA -          │           18 Feb 2000 Nashville, Davidson County, Tennessee, USA)
         │                     + Living
         ├─Baby Boy Draper
(Algood, Putnam County, Tennessee, USA;1894 - 9 Apr 1894)
         ├─Howard Young Draper
(8 Sep 1886 Smyrna, Putnam County, Tennessee, USA - 18 Apr 1974 Cookeville, Putnam County, Tennessee, USA)
         │ + Adelia Lynn
(14 Oct 1889 Jackson County, Tennessee, USA - 26 Dec 1990 Cookeville, Putnam County, Tennessee, USA)
         ├─Stephen Ammonette Draper, Sr
(15 Jul 1879 Bloomington Springs, Jackson County, Tennessee, USA -          │ 3 Feb 1940 Algood, Putnam County, Tennessee, USA)
         │ + Lula M Eastes
(6 Dec 1884 - Sep 1984 Blytheville, Mississippi County, Arkansas, USA)
         └─Harvey Allison Draper
(9 Jun 1882 Bloomington Springs, Jackson County, Tennessee, USA - 31 May 1969 Cookeville, Putnam County, Tennessee, USA)
          + Della Maude Swift
(Tennessee, USA;19 Jun 1885 - 8 Jul 1964)