ABAP Programs: Working with hide statements

REPORT ZSOURCE1704.
* work area
TABLES CUSTOMERS.
* Internal table
DATA ALL_CUSTOMERS LIKE CUSTOMERS OCCURS 100
WITH HEADER LINE.
* Processing data
START-OF-SELECTION.
SELECT * FROM CUSTOMERS INTO TABLE ALL_CUSTOMERS.
LOOP AT ALL_CUSTOMERS.
WRITE / ALL_CUSTOMERS-NAME HOTSPOT ON.
HIDE ALL_CUSTOMERS-ID.
ENDLOOP.

* Detail information
AT LINE-SELECTION.
WRITE: / ‘Customer detail information:’,
ALL_CUSTOMERS-NAME,
ALL_CUSTOMERS-CITY,
ALL_CUSTOMERS-TELEPHONE.