The syspref OPACShowHoldQueueDetails controls whether or not details about holds are shown to patrons on the OPAC. The name uses the term "queue" to refer to the list of patrons waiting for the hold. But Koha's "Holds Queue" is an unrelated specific tool. It's confusing to use the term "queue" to refer to something different here. I suggest we rename this syspref "OPACShowHoldPriorityDetails."