[Moin-user] [ACL]where is full allowed actions list for ACL?

[Zoom.Quiet]

i notice there is tow konds of allowed actions define is allow:
at http://moinmoin.wikiwikiweb.de/HelpOnConfiguration is "acl_rights_valid"
set as = [ 'DeletePage','AttachFile', 'RenamePage']
at http://moinmoin.wikiwikiweb.de/HelpOnAccessControlLists#head-71ce711a050f78cc0c5b71db351d128714635ba0
is "allowed_actions"
set as = ["read",  "write",  "delete",  "revert",  "admin"]
and it say "(and the place to extend, if necessary)"

so where is the full list of we can usage allowed actions?
or means the "to extend, if necessary" action is wait us to writing?

i want one action for limited add attachment for some level user in MoinMoin,
this is possible?

thanx for all!

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