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":
Legend:
Peter J Ohlinger
(16 Jun 1883 - 2 Aug 1974 Portsmouth, Shelby County, Iowa)
Margaret B Leinen (4 Dec 1882 Iowa - 27 Mar 1967 bur.Portsmouth, Shelby County, Iowa)
(m. 16 Apr 1907 Portsmouth, Shelby County, Iowa)
   ├─Peter M Ohlinger (12 Jul 1908 Shelby County, Iowa - 24 Nov 1978 Portsmouth, Shelby County, Iowa)
   ├─Emma Ohlinger (9 Jun 1910 Portsmouth, Shelby County, Iowa - 7 Dec 1979 Harlan, Shelby County, Iowa)
   │ Cecil Andrew Monahan (28 Nov 1911 - 19 Nov 1987 Omaha, Douglas County, Nebraska)
   │ (m. 17 May 1932 Portsmouth, Shelby County, Iowa)
   │    └─Phillip J Monahan (14 Oct 1934 Portsmouth, Shelby County, Iowa -    │     19 Oct 2004 Las Vegas, Clark County, Nevada)
   ├─Leo J Ohlinger (3 Sep 1912 Portsmouth, Shelby County, Iowa - 9 May 1978 Omaha, Douglas County, Nebraska)
   ├─John Henry Ohlinger (Portsmouth, Shelby County, Iowa;16 Mar 1920 - 28 Aug 2002)
   │ Rita C Reinig (17 Jan 1921 Panama, Shelby County, Iowa - 2 Dec 2005 Harlan, Shelby County, Iowa)
   │ (m. 17 Apr 1945 Portsmouth, Shelby County, Iowa)