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: Anton Rosemeyer (21 May 1808 Oldenburg, Sachsen, Germany - 25 Dec 1897 Galena, Jo Daviess County, Illinois)
Mother: Antoinette Welp (1827 Hannover, Stadt Hannover, Niedersachsen, Germany - 1880 Galena, Jo Daviess County, Illinois)
Mary Ann Rosemeyer
(Jun 1851 Galena, Jo Daviess County, Illinois - 16 Feb 1929 Townsend, Broadwater County, Montana)
Augustus B Curley (1848 Illinois - 24 Mar 1889 Galena, Jo Daviess County, Illinois)
(m. 24 Mar 1873 Galena, Jo Daviess County, Illinois)
   ├─Emma A Curley (May 1876 Galena, Jo Daviess County, Illinois - Yes, date unknown)
   ├─William Bernard Curley (14 Oct 1879 Galena, Jo Daviess County, Illinois -    │ May 1934 Reibling, Lewis and Clark County, Montana)