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":
Legend:
Father: John Mitchell (28 Apr 1708 Kittery, York, Maine - 3 Apr 1799 Wells, York, Maine)
Mother: Lydia Sewall (24 Jan 1717 York, York, Maine - 8 Jun 1770 bur.Kennebunk, York, Maine)
Joanna Mitchell
(31 Aug 1738 York, York, Maine - 16 Sep 1813 Kennebunkport, York, Maine)
Nathaniel Kimball (Bef 21 May 1738 Wells, York, Maine - ??)(m. 19 Mar 1761 Wells, York, Maine)
└─Lydia Kimball (1763 - 7 Oct 1832 Kennebunk, York, Maine)
Abraham Currier (25 Mar 1759 Amesbury, Essex, Massachusetts - 24 Mar 1846 Kennebunkport, York, Maine)
(m. 5 Jun 1784 Wells, York, Maine)
└─Edmund A. Currier (Abt 1789 Kennbunkport, Maine - 4 Aug 1872 bur.Kennebunk, York, Maine)
Esther Kimball ( - 6 Jul 1843 bur.Kennebunk, York, Maine)(m. 20 Dec 1815 Wells, York, Maine)
└─Cyrus M. Currier (Abt 1833 Kennebunk, York, Maine - 21 Aug 1900 Boston, Suffolk, Massachusetts) =>
+ Louisia Ardelia (Abt 1839 France - 27 Nov 1866 Dorchester, Suffolk, Massachusetts)
+ Thankful P. Millett (Abt 1831 - ??)(m. 25 Mar 1869 Boston, Suffolk, Massachusetts)
Nielsen Hayden genealogy
1738 - 1813 (75 years)
(28 Apr 1708 Kittery, York, Maine - 3 Apr 1799 Wells, York, Maine)
Abraham Currier 
