Release 10.1A: OpenEdge Development:
ADM Reference

IndexInformation

Index Information formatted as the 4 GL index-information attribute, but with RowObject column names, CHR(1) as index separator, and CHR(2) as table separator.

Data type: CHARACTER

Notes:

Read and Write.
Intended for internal use by other index info functions, which use this as input to indexInformation(). (Unmapped columns are returned fully qualified!) This property can be used as input parameter to indexInformation() for further refinement.
If the property is ?, it calls the indexInformation() in query.p and stores the returned value for future calls.