[Pharo-project] Category to be ignored by Monticello?

I have some code that generates code on the fly in user classes. I want them to stay in the image for efficiency reasons, but if the user class gets saved in Monticello, I don't want the generated code saved. I can obviously put the methods in some particular category - say *auto*generated*do*not*save*. But after looking at Monticello for a bit, I can't find where it decides what to save - if, for example, it ignores things in other categories. Any help appreciated - either "Yes, it ignores *foo*bar* category", or "Here's where to look in Monticello" Thanks ../Dave