Marking area as trader safe makes the areas indestructable, great for lobby and areas you dont want players destroying.
How to do it?
You've created a location of your choice say lobby or whichever.
Now
1. /mark lobby start <- do this on one corner of the lobby
2. /mark lobby end <-- do this aposite corner of lobby diagonal
3. type /trader protect lobby
The lobby now is indestructible and to undo it type /trader unprotect lobby
Bazar, Avqust 5, 2018