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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┌──Wiland Barger
(10 Mar 1792 - 1850 Bradley County, Tennessee, USA)
Mary J Barger (1837 Washington County, Tennessee, USA - Abt 1904 Collin County, Texas, USA)
│ ┌──Peter Zetty
(1735 Lancaster County, Pennsylvania, USA - 10 Jan 1799 Bedford County, Virginia, USA) =>
│ ┌──Christian Zetty
(1762 Donegal Twp, Lancaster County, Pennsylvania, USA - 1841 Washington County, Tennessee, USA)
│ │ └──Barbara Ann Reiff
(1741 Lancaster County, Pennsylvania, USA - 1819 Rockingham County, Virginia, USA) =>
│ │
└──Christiana Zetty
(1794 Rockingham Court, Roanoke County, Virginia, USA - 1888 Bradley County, Tennessee, USA)
└──Barbara Miller
(1764 Augusta County, Virginia, USA - 27 Mar 1846 Washington County, Tennessee, USA)