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":
Caroline Houston
(1 Jul 1835 Ohio, USA - 19 Mar 1866 bur.Madison County, Ohio, USA)
Jacob Lockhart Arbuckle
(14 Dec 1828 Madison County, Ohio, USA - 20 Apr 1902 bur.Madison County, Ohio, USA)
         ├─Viola Arbuckle
(Madison County, Ohio, USA;16 Feb 1855 - 4 Jun 1923)
         │ + Thomas P Cloud
(Apr 1853 Pennsylvania, USA - 12 Dec 1921 Madison County, Ohio, USA)
         ├─Walter Arbuckle
(4 May 1858 Madison County, Ohio, USA - 18 Dec 1895 bur.London, Madison County, Ohio, USA)
         ├─Lizzie Arbuckle
(13 Sep 1860 Madison County, Ohio, USA - 27 Jan 1905 bur.Madison County, Ohio, USA)
         └─Flora Belle Arbuckle
(19 Oct 1863 Madison County, Ohio, USA - 4 May 1911 Los Angeles County, California, USA)
          + John Thomas Lindsey
(8 Aug 1861 La Rue, Marion County, Ohio, USA - 15 Feb 1919 Madison County, Ohio, USA)