This extension creates an Ahnentafel genealogy report of ancestors for any number of generations (as entered when the extension starts). This type of report uses a special numbering system. Each person is assigned a number. Their father's number is double their number; their mother's number is one more than their father's number.
By default, this extension reproduces the built-in Ahnentafel report in "Reports" menu of GEDitCOM II. If that built-in report does all you need, then there is no need to use this extension. But, if you wished the built-in report could output different information for each ancestor or use a different language, this extension can solve that problem. The process is: