I am getting better now but… I really wish there was a “pause, retract, resume” feature:). First cancel I realized when my router hit the edge 
second issue is when my sweepy could not fit in the hole.
I am sitting here now with my fingers crossed that I have clearance!
Restart from a line number will be coming before too long.
Sweet. Then you could automate it with a button 
This is Awesome 
I will plant a seed “Restart from tool change” allows you to not have to dig into the file. and I would imagine a lot safer
I would like to see a tool change option after a pause has been initiated.