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: Thomas Charles SEELEY (5 Sep 1873 Brainardsville, Franklin, New York, USA - 16 Mar 1958 North Branford, New Haven, Connecticut, USA)
Mother: Avalena Blanche NEWSON (23 Jan 1881 Prince Edward Island, Canada - 19 Mar 1985 Wallingford, New Haven, Connecticut, USA)
Warren T SEELEY
(New Haven, New Haven, Connecticut, USA;17 May 1913 - 20 Sep 1980)
Bernice GAVIGAN (4 Jun 1915 New Haven, New Haven, Connecticut, USA - 8 May 2001 Hamden, New Haven, Connecticut, USA)
   └─Joan SEELEY (7 Jan 1942 New Haven, Connecticut, USA - 13 Mar 2009 Hartford, Connecticut, USA)