>I'm wanting to have multiple detail sections of a report in VFP 6. That is, one parent table with several child tables at the same level, generating section A detail, then section B detail...
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>I don't feel Unioned Selects (Q119354 Knowledge Base) would work because the structures are different among the child tables.
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>Apparently this can be done in Access with "Sub Reports". Do I have to resort to Crystal Reports?

No you don't have to resort Crystal. VFP can't do multiple detail bands however it doesn't need to know actually you're doing multiple bands.
All it cares is you have to have total number of records as your detail lines.
You also don't need a union. If applicable you could of course create a union filling nonmatching fields with dummy values.
Create one dummy cursor as the report controller, relate it to multiple tables and use print when.
Cetin