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":
         ├─ Bertold I. von Büren
(Abt 1155 - Yes, date unknown)
         │
         │          ├─ NN von Büren
(Abt 1175 - Yes, date unknown)
         │          │ + Bernhard III. von Oesede
(Abt 1167 - Yes, date unknown)
         │          ├─ Bertold III. von Büren
(Abt 1180 - Yes, date unknown)
         │          │ Othelenda von Hengebach
(Abt 1185 - Yes, date unknown)
         │          │          ├─ Bertold IV. von Büren
(Abt 1223 - Yes, date unknown) =>
         │          │          │ + Dideradis von Arnsberg
(Abt 1222 - Yes, date unknown)
         │          │          ├─ Dietrich von Büren
(Abt 1225 - Yes, date unknown)
         │          │          └─ Konrad von Büren
(Abt 1227 - Yes, date unknown)
         │          └─ Konrad von Büren
(Abt 1185 - Yes, date unknown)
         ├─ Sophie von Büren
(Abt 1157 - Yes, date unknown)
         ├─ Thietmar II. von Büren
(Abt 1160 - Yes, date unknown)
         │ +
         ├─ Hermann I. von Büren
(Abt 1162 - Yes, date unknown)
         └─ Elias II. von Büren
(Abt 1164 - Yes, date unknown)