Send to Back
This command is use for objects. Let suppose we draw to box in Inpage file. A color is blue and the other is red. If we want to put blue box behind the red box. Select blue box go in Edit menu then click on Send to Back. Then blue box will become behind the red box.
Bring to Front
Now we want to put blue box front of red box. Then select blue box and go in Edit menu and click on Bring to Front. Then blue box will become front of red box.