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":
   └─Ruth Marie Kiefer (20 Mar 1917 - 18 Apr 1960 Keokuk County Hospital, Sigourney, Keokuk County, Iowa)
    Richard Peter Hammes (14 Oct 1910 - 22 May 1972 Near the South Skunk River, about 4 miles north of Ollie,     Keokuk County, Iowa)(m. 21 May 1946)
       ├─Ronald Nicholas Hammes (2 Nov 1946 Keokuk County Hospital, Sigourney, Keokuk County, Iowa -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)
       ├─Donald John Hammes (2 Nov 1946 Keokuk County Hospital, Sigourney, Keokuk County, Iowa -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)
       ├─Karen Kay Hammes (20 Feb 1948 -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)
       ├─Linda Lee Hammes (22 Jul 1949 -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)
       ├─Gary Richard Hammes (9 Aug 1950 -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)
       ├─Rose Mary Ann Hammes (4 Nov 1953 -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)
       ├─Richard Dean Hammes (16 Jul 1955 Keokuk County Hospital, Sigourney, Keokuk County, Iowa -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)
       ├─Victoria Jean Hammes (16 Jul 1955 Keokuk County Hospital, Sigourney, Keokuk County, Iowa -        │ 25 Oct 1956 Auto/Train Accident, East of Sigourney, Keokuk County, Iowa)