string or LLL reference
This string will be appended (not prepended, contrary to the name of this option) to the title of a record copy when it is inserted on the same PID as the original record to distinguish them.
Usually the value is something like :php:` (copy %s)` which signifies that it was a copy that was just inserted (The token
%swill be replaced by the copy number).
Note it is possible to disable this feature on a page and user or group level using the Page TSconfig option disablePrependAtCopy.