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":
John Billingsley
(1587 Astley, Shropshire, England - 1659 Netherlands)
Agatha Cooper
(1593 Shropshire, England - 1666 Rotterdam, Zuid-Holland, Netherlands)
         ├─Francis Billingsley
(1620 Shropshire, England - 1684 Calvert County, Maryland, USA)
         │ Ann Frances Hale
(1622 Reusel-de Mierden, Noord-Brabant, Netherlands - Abt 1669 Calvert County, Maryland, USA)
         │          │ Sarah Ann Billingsley
(1652 Essex County, Virginia, USA - 1712 St Mary's County, Maryland, USA)
         │          ├─Ann Billingsley
(Calvert County, Maryland, USA;1650 - 1650)
         │          ├─Francis Billingsley, Jr
(1653 Calvert County, Maryland, USA - 10 Jun 1695 Selby Clifts, Calvert County, Maryland, USA)
         │          │ + Susanna (m. Francis Billingley)
         │          ├─Agatha Billingsley
(Calvert County, Maryland, USA;1656 - ??)
         │          │ + Thomas Paget
( - Abt 1677)
         │          ├─Edward Billingsley
(Calvert County, Maryland, USA;1658 - 1750)
         │          └─Ann Elizabeth Billingsley
(Abt 1660 Richmond County, Virginia, USA - ?? Virginia, USA)
         │           + Thomas Sadler
         ├─William Billingsley
(1628 Shropshire, England - Dec 1657 Richmond, Wise County, Virginia, USA)
         │ Sarah Bowman
(1635 Essex County, Virginia, USA - 1690 Richmond County, Virginia, USA)
         │          └─Sarah Ann Billingsley
(1652 Essex County, Virginia, USA - 1712 St Mary's County, Maryland, USA)
         │           John Billingsley
(1647 Rotterdam, Zuid-Holland, Netherlands - 1693 at sea)
         │           :         └─ This couple were related to each other. Any descendants have been already been listed
         │           + William Brown
         ├─John Billingsley
(1612 Shropshire, England - 9 Nov 1663 Chucatuck, Nansemond County, Virginia, USA)
         ├─James Billingsley
(1616 Shropshire, England - 1663 Maryland, USA)
         ├─Thomas Billingsley
(1618 Shropshire, England - 1673 Dorchester County, Maryland, USA)
         ├─Mary Billingsley
(1630 Shropshire, England - 1730 Netherlands)
         ├─Walter Billingsley
(1632 Shropshire, England - 1740 Netherlands)
         ├─Bridgett Billingsley
(1622 Shropshire, England - 1720 Netherlands)