It stores the value of a variable or field at the time the line is being written to the list. Later, when that line is clicked (e.g., in an AT LINE-SELECTION event), the hidden values are automatically restored.

How it works:

• During WRITE statements in the basic list, you use HIDE to store additional data in the background.

• When the user interacts (e.g., double-clicks) on that list line, the system retrieves the hidden data, which you can then use in the AT LINE-SELECTION event.

  REPORT zprg_test_ecc.
  
  DATA: v_ename TYPE ename,
        v_empno TYPE empno.
  
  START-OF-SELECTION.
  
    SELECT empno ename FROM emp INTO (v_empno, v_ename).
      WRITE: / v_ename.
      HIDE: v_empno, v_ename.
    ENDSELECT.
  
  AT LINE-SELECTION.
  
    WRITE: / 'Details for employee:',
           / 'EmpNo:', v_empno,
           / 'Name:', v_ename.