title: How to write structures?
body: <p>How can I show the value inside a structure? see below the example:</p>
  
  <pre><code>DATA: BEGIN OF line,
          col1 TYPE i,
          col2 TYPE i,
        END OF line.
  
  DATA: itab LIKE TABLE OF line,
        jtab LIKE TABLE OF line.
  
  DO 3 TIMES.
    line-col1 = sy-index.
    line-col2 = sy-index ** 2.
    APPEND line TO itab.
  ENDDO.
  
  MOVE itab TO jtab.
  
  line-col1 = 10. line-col2 = 20.
  APPEND line TO itab.
  
  
  IF itab GT jtab.
    WRITE / 'ITAB GT JTAB'.
  ENDIF.
  </code></pre>
  
  <p><strong>Write: itab, jtab.</strong></p>
  
  <p>because i want to know why itab is greater than jtab?.</p>