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: Michael Aloysius Hammes (26 Jun 1891 At Home on Farm, Clear Creek Township, Keokuk County, Iowa - 8 Feb 1967 Ottumwa, Wapello County, Iowa)
Mother: Cecelia Kathern Striegel (11 Sep 1893 - 27 Mar 1962 bur.Clear Creek Township, Keokuk County, Iowa)
Cletus Michael Hammes
(15 Dec 1933 At Home on Farm, Clear Creek Township, Keokuk County, Iowa - 1 Mar 2014 Manor House, Sigourney, Iowa)
   │ + Keith Garling ( - 29 May 2019 Mercy Hospital, Iowa City, Johnson County, Iowa)
   ├─William Cletus Hammes (19 Feb 1965 Sigourney, Keokuk County, Iowa -    │ 17 Oct 2008 Sigourney Care Center, Sigourney, Keokuk County, Iowa)