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        *base permissions apply to directories (not files)
        *new sub-directories inherit from parent directory permissions
        *files have no individual protection. They inherit the protection from
        the directory they sit in.

Wiki MarkupACLs are composed of pairs \ [ protection group or user, access rights \ ]. For
example, grp_users (the group of all users) might have read permissions on a
particular directory.

 Access Rights

 There are seven access rights. Four deal with directories:
        
        *a (administer) : right to administer of the ACLs of this directory
        *l (lookup) : right to list the content of the directory
        *d (delete) : right to delete files or sub-directories
        *i (insert) : right to create new files or directories

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