ACL: moving messages around

[Ian McDonald]

Hi,

Am I right in thinking that ACLs are blind to the difference between
deleting a message from a folder and moving it into a different folder?

Also, how does one give a user permission to delete a message from a folder,
but not to delete the folder. (I've RTFMed, but can't find it.)

(I'm looking at a mail system where people can move messages that are in the
wrong folder *out* of the folders they reply to and into the right one, but
not *in* to the folders they reply to.)

Thanks,

Ian