-This server maintains the master database of character and island name
-images, which is used for the commodity screen OCR and also for
-determining your island name.
-
-By default, we ask the server for an updated set of dictionaries every
-time we run; this is done with the rsync protocol (indeed, by invoking
-rsync). You can disable this with --dict-local-only.
+This server maintains the master copies of various databases which are
+used to assist the OCR process. Collectively I call these
+`dictionaries'. There is a dictionary of character and island name
+images, of new commodity names, and of notable known OCR
+misrecognitions. These are used for the commodity screen OCR, for
+determining your island name, and for checking whether commodities not
+found on the PCTB server are real.
+
+By default, we ask the server for appropriate updated dictionaries
+every time we run; this is done with the rsync protocol (indeed, by
+invoking rsync). You can disable this with --dict-local-only.