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":
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┌──John Maddison
(1620 Gloucestershire, England - 16 Apr 1683 King & Queen County, Virginia, USA) =>
┌──John Madison, Jr.
(1640 St Stephen's Parish, King & Queen County, Virginia, USA - 1705 King & Queen County, Virginia, USA)
│ └──Maria Ambrose
(1620 Buckinghamshire, England - 1680 Virginia, USA)
│
┌──Ambrose Madison
(1693 Spotsylvania County, Virginia, USA - │ 27 Aug 1732 Madison Family Cemetery, Montpelier Station, Orange County, Virginia, USA)
│ └──Isabella Minor (Todd)
(1663 Toddsbury, Gloucester County, Virginia, USA - 1706 St Stephen's Parish, King & Queen County, Virginia, USA)
│
John Madison (1720 King George, King George County, Virginia, USA - Mar 1784 Visses, Botetourt County, Virginia, USA)
└──Frances Taylor
(30 Aug 1700 Rapidan, Orange County, Virginia, USA - 25 Nov 1761 Montpelier Station, Orange County, Virginia, USA)