+//FIXME: do we need to put this list somewhere else?
+//FIXME: do we want to use constants instead? probably not a bad idea, although plugins probably won't, so we still want to try to keep track of the plugin error codes too if possible (new plugin website should help)
+/**
+ * Known core error codes:
+ *
+ * 1 - No RPC action was given in request (please use "rpc_action")
+ * 2 - RPC action was not understood (perhaps a needed plugin is
+ * not installed and activated?)
+ *
+ * Known plugin error codes:
+ *
+ * 500 - Empty Folders plugin efPurgeTrash action failed
+ * 501 - Empty Folders plugin efPurgeAll action failed
+ * 502 - Empty Folders plugin efDeleteAll action failed
+ *
+ */
+
+
+