- /* l - lookup (mailbox is visible to LIST/LSUB commands, SUBSCRIBE mailbox)
- * r - read (SELECT the mailbox, perform STATUS)
- * s - keep seen/unseen information across sessions (set or clear \SEEN flag
- * via STORE, also set \SEEN during APPEND/COPY/ FETCH BODY[...])
- * e - perform EXPUNGE and expunge as a part of CLOSE
+ /* l - lookup (mailbox is visible to LIST/LSUB commands)
+ * r - read (SELECT the mailbox, perform STATUS et al)
+ * s - keep seen/unseen information across sessions (STORE SEEN flag)