Some of the settings on this page are used for validation on data entry. They are all also used for estimating dates of birth and death. For example, if you select "Life Dates (Est.)" as an item to be displayed in the Records Window for Individuals, Family Historian will display its estimate of the earliest date at which each person might have been born (if this information is not recorded) and the latest date at which the person might have died (again if this information is not recorded).
The values specified here do not have to be strictly accurate. It does not matter if you specify, for example, that the maximum lifespan is 100 years and it turns out that someone in your file lived over 100 years. The values just have to be good enough approximations for purposes of estimation.
|Estimate Future Death Dates||By default, Family Historian will return no value if its estimated death date is set in the future. However, if you wish it to estimate future death dates, tick this box.|
|Default Date Range||In Family Historian, dates can be specified imprecisely. For example, you can say that an event occurred after or before a specified date. If you have specified that an event occurred before 1900, say, should Family Historian show the event if events are being filtered by date, and only events that occurred between 1820 and 1850 are being displayed (e.g. using the time slider in the Map window)? Family Historian will decide this question by using the value specified for the Default Date Range. If the value of field is 10, for example, Family Historian will filter by treating the event specified as 'before 1900' as falling in the 10 years leading up to 1900 (i.e. 1890-1900).|