allow server item tables to be enabled by default

system/config.example.json

@@ -549,10 +549,19 @@
   // tracking is always enabled for them.
   "EnableItemTracking": true,
 
-  // Enable or disable drops by default in non-BB games (drops are always
-  // enabled in BB games). The leader can toggle drops in each game with the
-  // $drop command.
-  "EnableDrops": true,
+  // These options control the behavior of items dropped from boxes and enemies.
+  // ItemDropMode specifies whether any items drop at all; this setting applies
+  // to all versions. UseServerItemTables specifies whether the dropped items
+  // are generated by the client or by the server; this setting applies to all
+  // versions except BB. For BB, items are always generated by the server.
+  // Server item tables can only be used in non-BB games if item tracking is
+  // also enabled.
+  // Either option can be Off, On, OffByDefault, or OnByDefault. If the
+  // ByDefault values are used, the game leader can enable or disable drops with
+  // the $drop command, and can switch between server and client drop logic with
+  // the $itemtable command.
+  "ItemDropMode": "OnByDefault",
+  "UseServerItemTables": "OffByDefault",
 
   // Whether to enable certain exception handling. Disabling this causes
   // newserv to abort when any client causes an exception, which is generally