import server.config.world_data
server.config.world_data.symbols_passable += ":_"
+server.config.world_data.symbols_hide += "|"
server.config.world_data.thingprol_field_spreadable = thingprol_field_spreadable
server.config.world_data.thingprol_test_hook = thingprol_test
server.config.world_data.thingprol_post_create_hook = thingprol_post_create