If the page style is set to Family Pages…
For each family found your GEDCOM file there will be a corresponding famxxx.html file. In other words if there are 300 families in your GEDCOM file, you will find 300 files labeled fam001.html to fam300.html.
If the page style is to Person Pages…
UncleGED will build one or more pages depending on the number of individuals in your GEDCOM. Each page will contain an person entry for each individuals up to number of max individuals per page as specified on the Person Page tab.
Descendant Outlines
There is also an option that allows for building Descendant Outline pages for selected individuals.
To create Descendant Outline pages: From the Pages tab check the "Create Descendant Outline Pages" option.
Enter the ID numbers for one or more individuals each separated by a comma. Select the number of generations (1 to 15).
Select the numbering system for the outline: d'Aboville, Henry Numbers, or Modified Henry Numbers.