Point Split Line
Function Description: The Point Split Line function allows the user to break a line object into two end-to-end line objects through a point on the line.
Steps
1.After clicking the Point Split Line 
button in the Vector Editor, move the mouse to click the point object on the line first, and then click the line object to be broken again, the line object will be broken into two line objects connected end to end.
If the point object is not on the line object, interruption is not allowed, and there will be a prompt in the output window.
- Original line segment: a single line object.
Original line segment
- Break at the point object on the line segment: The two lines after the break are connected end to end at the point object.
Line segment after break
- The point is not on the line: Break will not be allowed, and there will be a prompt in the output window.
Break point not on line
Error prompt