To persist or not to persist ?

[Laurent Martelli]

The current version of interp-c automatically saves objects which are
lambda or variable. But I'm wondering it's a good thing. We could let
users say what they want to save. In fact, I had to implement a
`delete' service because I sometimes type a wrong lambda and don't
want to keep it. Having `delete' is equivalent to having `save',
except that you'd have to explicitly save objects, instead of
explicitly delete them. 

What would you chose : explicit save or explicit delete ?

-- 
Laurent Martelli
martelli@iie.cnam.fr