... { ASSIGNING <fs> [CASTING] }
| { REFERENCE INTO dref }.
These additions are possible only when you change individual lines. If it was possible to change them, the ASSIGNING addition is used to assign the changed line to a field symbol, and the REFERENCE INTO addition makes a reference to the changed line in the reference variable.
Syntax and meaning are the same as for the specifcation of the output behavior in the
READ TABLE statement, and the same restrictions apply with regard to the manipulation of key fields with
sorted tables and hashed tables.