Did not find settings to prevent from Comment Deletion (we have Law about this in Europe).
I did not find comment deactivation (for admin) and Edit option for autor/admin
perhaps the permission page in admin is not done yet
need a time limit for each (we have laws in Europe about protecting)
we should be able to EDIT and DELETE from Module (ex : Article module, when reading a post), not only from Comment List http://mysite.com/comment/list/
MODERATION / ADMIN
DEACTIVATION : admin can deactivate a litigious comment
TRASH folder (?)
ARCHIVE old messages
DELETE : definitive deletion
SEND a PRIVATE message to Author
PRUNE
VIEW
be able to indicate comment as inappropriate (ask moderation feature)
Did not find settings to prevent from Comment Deletion (we have Law about this in Europe). I did not find comment deactivation (for admin) and Edit option for autor/admin perhaps the permission page in admin is not done yet