[rules-users] How to make the working memory "clean"?

[shawn]

I don't understand the garbage collection mechanism in drool, though I have
read the expert documentation.
1 - how to retract a global variable in drool?
2 - how to retract all the facts that have been inserted into the working
memory? If I use halt(), does it retract all facts in the working memory and
stop the all the rules?


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