cyrus-ctl_mboxlist(8) on Linux
The text 613dc2878e13, as Debian 12 (Bookworm) shipped it.
Cyrus IMAP documentation Perform operations on the mailbox list database
Flags it lists
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-C -
-L -
-a -
-d -
-f -
-i -
-m -
-p -
-u -
-v -
-w -
-x -
-y