This command will return the selection set for the automatic index.
The format is:
XX=IXSEL (filename,indexletter)
The return value
is:
SelectorSentence:Group,Heading,Rel,Value:Group,Heading,Rel, Value....
Version Ref: 5.8.03
Enhanced to allow adding working path the filename
Then: IXSEL(filename, indexletter[,sortlevel[,path]])