trim and cuves

 From:  dagobert
48.1 
Nice software.it works well. and in half an hour you start to work.
I have few question :
is there a way to untrim object?
how to change a curve direction?(i got some loft trouble)
how to select a row or column of point?
I hope you will try to find a price for it a bit like silo, when you will be ready to release it.
regards
dag