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":
Hannah Beardsley
(1642 Stratford, Fairfield County, Connecticut, USA - 23 Feb 1679 Hatfield, Hampshire County, Massachusetts, USA)
Nathaniel Dickinson, Jr
(16 Aug 1643 Wethersfield, Hartford County, Connecticut, USA - 11 Oct 1710 Hatfield, Hampshire County, Massachusetts, USA)
         ├─John Dickinson
(1 Nov 1667 Hadley, Hampshire County, Massachusetts, USA - 22 Dec 1761 Hatfield, Hampshire County, Massachusetts, USA)
         │ + Sarah Leonard
         ├─Robert Dickinson
(1677 Hatfield, Hampshire County, Massachusetts, USA - ??)
         ├─Daniel Dickinson
(3 Mar 1675 Amherst, Hampshire County, Massachusetts, USA - ??)
         ├─Nathaniel Dickinson, III
(Hatfield, Hampshire County, Massachusetts, USA;1 May 1663 - 10 Oct 1751)
         │ + Hepzibah Gibbs
(27 Jan 1664 Windsor, Hartford County, Connecticut, USA - 26 Jun 1713 Hatfield, Hampshire County, Massachusetts, USA)
         ├─Mary Dickinson
(Hatfield, Hampshire County, Massachusetts, USA;2 Feb 1673 - 16 Aug 1718)
         │ + Nathaniel Smith
(2 Jan 1671 Hatfield, Hampshire County, Massachusetts, USA - Dec 1740)
         ├─Rebecca Dickinson
(Mar 1677 Hatfield, Hampshire County, Massachusetts, USA - ??)
         └─Hannah Dickinson
(18 Jan 1666 Hatfield, Hampshire County, Massachusetts, USA - 3 Aug 1745 Colchester, New London County, Connecticut, USA)
          + Samuel Kellogg
(11 Apr 1669 Hadley, Hampshire County, Massachusetts, USA - 24 Aug 1708 Colchester, New London County, Connecticut, USA)