The change graphics statement is the same as the change statement (described above), except that the change graphics statement does not delete, or affect in any way, any of the object's children. For example, if there is a region named PanelArea that displays some report options and you want to modify PanelArea but not delete its children (the report options), you should use the change graphics statement:
response to PanelArea
change graphics PanelArea to # Reflects active mode
move 10 10
solid blue box 100 80
move 10 10
solid color 20 box 80 60
...
response to Reset
change graphics PanelArea to # Reflects inactive mode
move 10 10
solid green box 100 80
...