+OSD Messages:
+~~~~~~~~~~~~~
+When OSDD is installed (see http://mj.ucw.cz/linux.html#osdd), Checkmail can
+send on-screen notifications on incoming mail. This can be enabled by the "d"
+mailbox option. Additionally, you can customize the OSD messages using the "-s"
+switch: "-s<key>=<value>" sets an OSD attribute (e.g., "-scolor=red" or
+"-sduration=3000" [ms]), "-s=<text>" adds a line to the message. If no text
+lines are defined, Checkmail uses built-in default.
+
+Each <text> can contain the following formatting sequences: