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: Joseph FARMER
(21 Oct 1832 Guildford, Western Australia, Australia - 24 May 1897 Geraldton, Western Australia, Australia)
Mother: Ann ARNOLD
(13 Mar 1836 Nailsworth, Gloucestershire, England - 16 Sep 1918 Strawberry, Western Australia, Australia)
Alice Elizabeth WATSON
(3 Sep 1872 Irwin River, Western Australia, Australia - 8 Oct 1947)
:         └─Mary Ann WATSON
(2 May 1889 - DECEASED)
:          + Robert Percival PETTIT
(22 Sep 1879 - 6 Feb 1945 Irwin, Western Australia, Australia)
:          (m. 9 Feb 1910 Irwin, Western Australia, Australia)
+ William MCLEAN
( - DECEASED)(m. 1911 Geraldton, Western Australia, Australia)