divide or join a curve or sketch with creo 2

[fabry56]

Hello everyone!
I'm tribulated but it could be a banality in creo2 I can't break a curve or a sketch in multiple parts using points.
Wasn't the split at point command once? I can't find him, and join two or more curves?
Thanks to who can explain.
Hi.

 

[BFausto]

Hi.

to divide the curves inside the sketch you can use divide.
to divide the 3d curves by one point, edge, surface, .... (together or part) you can use the rifilo command.
to join two or more adjacent curves you must proceed with the copy-paste command.