> Can httrack stop and then start again where they
> ended up?"where they ended up" makes no sense.

HTT can pause (options -> pause) then you can minimize it, hybernate if
necessary, and resume (options -> resume) right where it left off.

You can also press Cancel (once only) it will finish up and exit, you can then
Continue at a later date, but it takes longer to get back to where it was.