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":
Guillaume III d' Arles
(Abt 942 Provence, Provence-Alpes-Côte d'Azur, France - Sep 1037 Avignon, Provence-Alpes-Côte d'Azur, France)
         ├─ Odilia de Provence
(Abt 975 - Yes, date unknown)
         │ + Miron von Sisteron
(Abt 970 - Yes, date unknown)
         │ + Leotger von Nizza
(Abt 960 - Yes, date unknown)
         └─ Adelheid de Provence
(Abt 977 - Yes, date unknown)
          Bernard I. de Besalú
(Abt 955 - Yes, date unknown)
                   └─ Velasquita de Besalú
(Abt 1005 - Yes, date unknown)
                    Armengol II. de Urgel
(Abt 1005 - 1038 Jerusalem, Israel)
                             └─ Armengol III. de Urgel
(Abt 1030 Castillo de Monzón, Aragón, España - 1065 Cruzada de Barbastro, Aragón, España)
                              + Adelaida de Besalú
(Abt 1032 - Yes, date unknown)
                              + Clementia de Bigorre
(Abt 1036 - Yes, date unknown)
                              + Sancha de Aragón
(Abt 1036 - Yes, date unknown)