Many of the metafunctions will work with a many-to-one relation.
When passing the array of field names, place the child fields in
the array as alias->field.

i.e.
        declare customer[10]
        customer[1]="LNAME"
        customer[2]="FNAME"
        ....
        ....
        customer[9]="AGENT->AGENTNAME"
        customer[10]="AGENT->ADDRESS"

query(), lister(), doitall(),lookfld(),formletr(),smalls() are some
of the functions which allow this.