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: Henry Andrew Walker (Washington County, Tennessee, USA;18 Mar 1875 - 30 Nov 1955)
Mother: Mary Adelaide Hunt (24 Dec 1879 Washington County, Tennessee, USA - 21 Jan 1960 Johnson City, Washington County, Tennessee, USA)
Herbert Carter Walker
(Jonesborough, Washington County, Tennessee, USA;10 Dec 1898 - 2 Oct 1979)
+ Jessie Pauline Diehl
(7 Jun 1903 Boones Creek, Washington County, Tennessee, USA - 24 May 1924 Jonesborough, Washington County, Tennessee, USA)
Lucille Morrow
(21 Dec 1909 Telford, Washington County, Tennessee, USA - 25 Sep 1978 Jonesborough, Washington County, Tennessee, USA)
          + Cyrus Ely Warden
(8 Jan 1936 New York, New York County, New York, USA - 8 Jun 2013 Satellite Beach, Brevard County, Florida, USA)