From Xojo Documentation
Return the title for the section.
|table||The iOSTable instance using this data source.|
|section||This is the section that has been requested.|
If you are not using sections, you can return empty text ("") here.
When using sections, return the name for the specified section. For example, if you are displaying names with sections for each letter of the alphabet, you might return "A" when section of 0 is passed in as a parameter.
Refer to the data source example in the User Guide to see how to set up a Data Source that returns names, with sections for the first letter of each last name.
You can also refer to the sample project included with Xojo: