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":
Father: Hindrik Alberts
(11 Apr 1726 Nieuw-Scheemda, Scheemda, Groningen, Nederland - Bef 20 Oct 1808 Nieuw-Scheemda, Scheemda, Groningen, Nederland)
Mother: Evertien Nannes
(1731 Meeden, Groningen, Nederland - 19 Oct 1808 Scheemda, Groningen, Nederland)
         └─ Evertje Nannes Wallema
(Dec 1791 Nieuw-Scheemda, Scheemda, Groningen, Nederland - 04 Nov 1831 Spijk, Bierum, Groningen, Nederland)
          Jakob Hindriks Tillema
(May 1784 Zeerijp, 't Zandt, Groningen, Nederland - 25 Dec 1863 Spijk, Bierum, Groningen, Nederland)
                   └─ Jantje Tillema
(19 Jan 1827 Spijk, Bierum, Groningen, Nederland - 25 Jul 1866 Godlinze, Bierum, Groningen, Nederland)
                    Wolter Jan Smidt
(05 Dec 1826 Garrelsweer, Loppersum, Groningen, Nederland -                     21 Dec 1909 Wagenborgen, Termunten, Groningen, Nederland)
                             └─ Evertje Smidt
(06 Nov 1855 Godlinze, Bierum, Groningen, Nederland -                               24 Jun 1937 Wagenborgen, Termunten, Groningen, Nederland) =>
                              + Jan Weemhof
(18 Sep 1849 Wagenborgen, Termunten, Groningen, Nederland -                               : 06 Aug 1883 Wagenborgen, Termunten, Groningen, Nederland)