Is there one?
What purpose is it supposed to serve?
Or is it simply a caprice - at the whim of the moderation team?
How does it work - seems any plea for a thread to be locked - is granted, simply takes a member to do so,
& sans rationale?
Conversely, if a thread has been locked, (for no apparently valid reason), then just ask for it to be - unlocked?
Some clarification here - would be welcome..