Feed hold with G-Codes

Hi,
For the various CNC systems out there, how do they handle feed hold while
threading on a lathe?

Say you specify that the system should do the thread in 12 passes. If you
feed hold after the sixth pass, and the restart, does it restart at the
beginning and just turn empty air until it reaches where it stopped? Or
does it continue where it left off. I'm assuming threading here with the
single line G-Code. I've always assumed that Feed Hold stops on G-Codes and
not in the middle.

Thanks,
John Dammeyer