The documentation wrongfully (in my mind) assumes that the reader should be familiar with all the possible permissions combinations:
The full set of permissions, in regex syntax, is
-|R|RW+?C?D?M?
. This expands to one of-, R, RW, RW+, RWC, RW+C, RWD, RW+D, RWCD, or RW+CD
, all but the first two optionally followed by an M. And by now you know what they all mean.
the problem is, All but the first 4 cases are not discussed in the document.
Can someone please explain what these additional 'C', 'D' and 'M' symbols mean?