diff --git a/LCDd.conf b/LCDd.conf
index 8769190..1ed9eab 100644
--- a/LCDd.conf
+++ b/LCDd.conf
@@ -84,13 +84,16 @@ WaitTime=5
 
 # If yes, the the serverscreen will be rotated as a usual info screen. If no,
 # it will be a background screen, only visible when no other screens are
-# active.
+# active. The special value 'blank' is similar to no, but only a blank screen
+# is displayed. [default: on; legal: on, off, blank]
 #ServerScreen=no
 
-# set master backlight setting [default: open; legal: off, open, on]
+# Set master backlight setting. If set to 'open' a client may control the
+# backlight for its own screens (only). [default: open; legal: off, open, on]
 #Backlight=open
 
-# set master heartbeat setting [default: open; legal: off, open, on]
+# Set master heartbeat setting. If set to 'open' a client may control the
+# heartbeat for its own screens (only). [default: open; legal: off, open, on]
 #Heartbeat=open
 
 # set title scrolling speed [default: 10; legal: 0-10]