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":
Legend:
Father: Constant Peter Hammes (21 Jul 1884 At Home on Farm, Clear Creek Township, Keokuk County, Iowa - 27 Feb 1978 Keokuk County Hospital, Sigourney, Keokuk County, Iowa)
Mother: Lena Mary Vogel (18 Jun 1889 At Home on Farm, Clear Creek Township, Keokuk County, Iowa - 25 Jul 1985 Sigourney Care Center, Sigourney, Keokuk County, Iowa)
Robert Dennis Leo Hammes
(20 Sep 1928 At Home on Farm, Clear Creek Township, Keokuk County, Iowa - 29 Jul 2017 University Hospitals, Iowa City, Johnson County, Iowa)
   │ Ron Mefford (11 Jun 1947 Mater Hospital, Knoxville, Iowa -    │ : 18 Sep 1996 Mercy Medical Center, Des Moines, Polk County, Iowa)