However, the for example, GoldEd does not allow writing something below the tearline and disables it if the user does write.
SM>> I may be wrong, but some AreaFixes read the message just before SM>> tearline.
MvdV> You are right. Areafix robots usually read the commands up to the MvdV> tearline. (if present) The tearline marks where the areafix commands MvdV> stop and where the user text BEGINS.
I disagree. This marks precisely the END of the text.
MvdV> A perfect example of of a case where invalidating a tear line is NOT MvdV> a good idea.
Why not? Should AreaFix read messages from the Ping? What can it invalidation affect?