Trim by Boundary 

  to trim the draft, text, toolpath along the picked boundary. 

  Menu【Modify > Trim by Boundary】

Steps:

1.Select th draft, text or toolpath.

2.Click MenuModify > Trim by Boundary.

3.Pick the fraft or text as the boundary.

4.Option: to trim off the inside or outside of boundary.

5.Click “OK”.