msgmetaget
This returns metadata keys.
msgmetaget ?-rw | -ro | -all? msgId ?key?
-
-rw
restricts the key list to read-write (modifiable). -
-ro
restricts the key list to read-only. - If you do not specify a key value, then the available metadata keys are returned.
- If you specify a key value, then the metadata that is associated with that key is returned.