I guarantee this is what you are "remembering", but it may not be exactly what you want:
ResetAllVariables - sets all variables in the calling script to zero.
(numVars:int) ResetAllVariables
I seem to remember that there was a way to reset all quest variables with one command.
I can't find it in the CS wiki nor in the OBSE command list.
I'm hoping to use this to reset the quest to its original state - i.e. as if it was the first time the user uses it.
If there is a command, can anyone let me know please?
Thanks,
Kuertee