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":
Georgia Carraway
(18 Jan 1878 North Carolina, USA - 21 May 1964 Beaufort, Carteret County, North Carolina, USA)
Alexander Truitt
(1 Apr 1875 North Carolina, USA - 19 Apr 1962 Carteret County, North Carolina, USA)
         ├─Cecil Charles Truitt, Sr
(5 May 1900 Carteret County, North Carolina, USA - 20 Oct 1977 Morehead City, Carteret County, North Carolina, USA)
         │ Helen Hughes Neal
(18 Aug 1897 Craven County, North Carolina, USA - Jun 1982 Morehead City, Carteret County, North Carolina, USA)
         │          ├─Cecil Charles (Chuck) Truitt, Jr
(2 Aug 1923 Beaufort, Carteret County, North Carolina, USA -          │          │ 8 Apr 2000 Richmond, Henrico County, Virginia, USA)
         │          │ + Gloria Marie Mayeaux
(5 Dec 1924 Alexandria, Rapides County, Louisiana, USA - 3 Jul 1996 Richmond, Henrico County, Virginia, USA)
         ├─Alma Bell Truitt
(18 Sep 1902 Carteret County, North Carolina, USA - 21 Apr 1962 Morehead City, Carteret County, North Carolina, USA)
         │ + Earnest Linwood Guthrie
(18 Oct 1897 Beaufort, Carteret County, North Carolina, USA - 3 Apr 1960 Norfolk, Norfolk County, Virginia, USA)
         ├─Walter Ventus Truitt, Sr
(14 Aug 1907 Carteret County, North Carolina, USA - 5 Sep 1998 Smithfield, Johnston County, North Carolina, USA)
         │ + Mildred Laura Short
(11 Nov 1911 Florida, USA - 22 Mar 1990 Tampa, Hillsborough County, Florida, USA)
         ├─Ellen Pearl Truitt
(27 Jan 1912 Merrimon, Carteret County, North Carolina, USA - 23 Jul 2002)
         └─Mabel Truitt
(1 Aug 1915 Beaufort, Carteret County, North Carolina, USA - 12 May 1972 Morehead City, Carteret County, North Carolina, USA)
          + George Davis Cottingham, Jr
(26 Feb 1918 Georgia, USA - 19 May 1971 Morehead City, Carteret County, North Carolina, USA)