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":
James Thomas Ford
(27 Feb 1890 Lenoir City, Loudon County, Tennessee, USA - 11 Jul 1968 Randleman, Randolph County, North Carolina, USA)
Mary Harriet Richmond
(16 Jun 1896 Charleston, Bradley County, Tennessee, USA - 6 Feb 1981 Knoxville, Knox County, Tennessee, USA)
:         └─Clyde Newman Ford
(21 Mar 1915 Lenoir City, Loudon County, Tennessee, USA - 23 Aug 1997 Brevard County, Florida, USA)
:          + Edna Mae (Tincy) Peters
(26 Feb 1917 Lenoir City, Loudon County, Tennessee, USA - 30 Nov 2001 Cocoa Beach, Brevard County, Florida, USA)
+ Lula Belle Porter
(24 Apr 1896 Euchee, Meigs County, Tennessee, USA - 1 Aug 1961 Asheboro, Randolph County, North Carolina, USA)