serveroption -- respawntiles
 

respawntiles={0x2,0x3,0x12,0x13}:={0x2A5,0x2A6,0x2 B5,0x2B6},{0x2AC,0x2AD,0x2BC,0x2BD}:={0x6EA,0x6EB, 0x6FA,0x6FB}

Will add the tiles {bush}:={bushstump} to Graal's default level refreshing. If tiles are updated in the level that are not a bush-type item, they will never go back to their original state. A bit meh for things like hammer stakes and such.

I realize this probably isn't the most organized method, but I can't think of another way to do so... unless maybe the array used to check tile updates is made into a public var or something.