In Administration > System preferences, UpdateNotForLoanStatusOnCheckin currently has an example with the following explanation: "When an item is checked in, if it's item type matches CR then when the value on the left (1) matches the items' not for loan value it will be updated to the value on the right." It should be corrected to say: "When an item is checked in, if its item type matches CR and its not for loan value matches the value on the left (1), then the item's not for loan value will be updated to the value on the right."
Additionally, there is missing / misleading information: further down is the statement "Valid values are NOT_LOAN authorized values and ONLYMESSAGE." However, UpdateNotForLoanStatusOnCheckin (now) also relies on item type codes. The sentence should be updated to reflect this.