Shape cut off, shall even be cut off from the first selected object with other shapes overlap, so if selected small round first, then select the apple mark the result will be bite small circle.

In three overlapping circles, three round shapes overlap after the joint and overlap are preserved, only two circles overlap area have been cut off hollow out (figure 3).

Although the distinction between research and development is not always clear-cut, and there is often considerable overlap, we will attempt to separate them.