Just a random thought - it would be interesting to be able to support random serial number generation.  It seems this would be trivial to implement **IF** the current system that replaces `JLCJLCJLCJLC`with the "internal production number" is an automated software-driven process.  If this was under software control, it seems that it should be able to replace something like `S#S#S#S#0000` with an auto-incrementing 4 digit serial number starting at **0**, or replace `S#S#S#S#25123` with an auto-incrementing 5-digit serial number starting at **25123**. Other formats could possibly be supported just by customizing the placeholder.