Describe

FROM------------------------
DESCRIBE DISTANCE BETWEEN struct-field1 AND struct-field4 INTO length.
FROM ------------------------
DESCRIBE FIELDS struct-field1 INTO length.
TO------------
DESCRIBE DISTANCE BETWEEN struct-field1 AND struct-field4 INTO length IN CHARACTER MODE.
Or
DESCRIBE DISTANCE BETWEEN struct-field1 AND struct-field4 INTO length IN BYTE MODE.
TO -------------------------
DESCRIBE FIELDS struct-field1 INTO length IN CHARACTER MODE
OR--------------------------
DESCRIBE FIELDS struct-field1 INTO length IN BYTE MODE..