diff --git a/Base-Plugin-Settings.md b/Base-Plugin-Settings.md
index 09652bb..a5e03d0 100644
--- a/Base-Plugin-Settings.md
+++ b/Base-Plugin-Settings.md
@@ -95,3 +95,5 @@ The core settings defined include the following:
 * _defaultmap_ : this setting, a string, specifies the name of the default map for the web client when it is first loaded by a user.
 
 * _verbose_ : this setting, a boolean, controls how verbose the messages are for the Dynmap plugin during startup.  Setting to _false_ will significantly reduce reported messages and details.
+
+* _swampshaded_ : this setting, a boolean, controls the default for the _swampshaded_ attribute for all shaders (if true, the 1.9+ darkening of swamp biomes is applied; if false, no darkening is done).  Default is true for 1.9.x and later, false for 1.8.x.