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":
Thomas Henry HALL
(15 Aug 1855 Adelaide, South Australia, Australia - 11 Jul 1933 East Coolgardie, Western Australia, Australia)
Harriet Alice GOLDING (13 Mar 1888 Mortlake, New South Wales, Australia - 14 Mar 1960 East Coolgardie, Western Australia, Australia)
└─Myrtle Jane HALL (1908 - 5 Mar 1991 Redcliffe, Western Australia, Australia)
Robert Grierson ROURKE (1903 Perth, Western Australia, Australia - 16 Jul 1985 Redcliffe, Western Australia, Australia)(m. 1933 Perth, Western Australia, Australia)
└─Barbara Anne ROURKE (Abt 1935 Western Australia, Australia - DECEASED Busselton, Western Australia, Australia)
Brian Henry MITCHELL (Abt 1935 - DECEASED Busselton, Western Australia, Australia)
(m. 1953 Swan, Western Australia, Australia)
1855 - 1933 (77 years)
Harriet Alice GOLDING 
(13 Mar 1888 Mortlake, New South Wales, Australia -