+- ``THREAD_META_LEFT``: format for meta information of messages from partner which is display in the left of screen.\r
+\r
+- ``THREAD_META_RIGHT``: format for meta information of messages from you which is display in the right of screen.\r
+\r
+- ``THREAD_MIN_WIDTH``: minimum width of a message frame.\r
+\r
+- ``NOTIFY_FORMAT``: format of a notification.\r
+\r