Restore per-message (key,value) metadata. Each line starts
with "#= ", followed by a message id, and a space separated
list of key=value pairs. Ids, keys and values are hex
- encoded if needed.
+ encoded if needed. See **notmuch-properties(7)** for more
+ details.
**tags**
**notmuch-hooks(5)**,
**notmuch-insert(1)**,
**notmuch-new(1)**,
+**notmuch-properties(7)**,
**notmuch-reply(1)**,
**notmuch-search(1)**,
**notmuch-search-terms(7)**,