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":
Mary Beekman
(1733 Kings County, New York, USA - Jun 1819 Harlingen, Somerset County, New Jersey, USA)
Thomas Skillman
(1727 Newtown, Queens County, New York, USA - Dec 1809 Harlingen, Somerset County, New Jersey, USA)
         ├─John Skillman
(10 Jan 1753 Harlingen, Somerset County, New Jersey, USA - 2 Dec 1835 Amwell, Hunterdon County, New Jersey, USA)
         │ + Maria Veghte
(15 Dec 1751 Six Mile Run, Somerset County, New Jersey, USA - 16 Jul 1845 bur.Ringoes, Hunterdon County, New Jersey, USA)
         ├─Ann Skillman
(20 Aug 1757 Newtown, Queens County, New York, USA - ?? Fairfax County, Virginia, USA)
         │ + Abraham Van Pelt
( - ?? Fairfax County, Virginia, USA)
         ├─Abraham B Skillman
(20 Jul 1759 Harlingen, Somerset County, New Jersey, USA - 10 Nov 1838 Somerset County, New Jersey, USA)
         │ Lucretia Van Zandt
(1763 Princeton, Mercer County, New Jersey, USA - 31 Dec 1851 Somerset County, New Jersey, USA)
         │          └─Joseph A Skillman
(17 Nov 1793 - 24 May 1880 Montgomery Twp, Somerset County, New Jersey, USA)
         ├─Isaac Skillman
(1761 Harlingen, Somerset County, New Jersey, USA - ??)
         ├─Jacob Skillman
(28 Aug 1764 Harlingen, Somerset County, New Jersey, USA - 13 Apr 1854 New Brunswick, Middlesex County, New Jersey, USA)
         ├─Catharine Skillman
(30 Jul 1766 Harlingen, Somerset County, New Jersey, USA - ??)
         │ + Peter Vorhees
         ├─Joseph Skillman
(1768 Harlingen, Somerset County, New Jersey, USA - ??)
         ├─Cornelius Skillman
(1 Jan 1771 Harlingen, Somerset County, New Jersey, USA - 12 Jan 1853 Somerset County, New Jersey, USA)
         └─Mary Skillman
(Harlingen, Somerset County, New Jersey, USA;1772 - 3 Mar 1851)