--- Get Item list ---
c ENUM_ITEMS\n
-s 201 Items <count> <item_id> <item_id> ...\n
+s 201 Items <count>\n
+s 202 Item <item_id> <price> <description>\n
+ ...
+s 200 List End\n
--- Get Item Information ---
c ITEM_INFO <item_id>\n
s 202 Item <item_id> <price> <description>\n