The placeholder [LISTS] does not work in Template/Content of list messages

When I put a placeholder [LISTS] in my own messages (in Template, Content or Footer) it does not work : Nothing or the name of the placeholder ([LISTS]) is printed but not the value.
In system messages (Confirmation Messages, Confirmation Preferences) it is ok.

At the topic, in the list of placeholders, there is question marks (-- (???) in front of [LISTS]. What does it mean ?

Thank for your responses

Hi Jean, that placeholder is only recognized for templates used in systems messages (subscribe, unsubscribe notifications for example). It won’t work on templates used to send regular campaigns.

Hope this helps,