Documented parameter values

src/com/powerflasher/as3potrace/POTraceParams.as

@@ -18,23 +18,32 @@ package com.powerflasher.as3potrace
 			this.optTolerance = optTolerance;
  		}
 
-		// Value for threshold filter applied to bitmap before processing
+		// Color value for threshold filter applied to bitmap before processing.
+		// Defaults to 0x888888
 		public var threshold:uint;
 
-		// The operator to use when the threshold is applied (ex. "<=", ">", etc)
+		// The operator to use when the threshold is applied (ex. "<=", ">", etc).
+		// Defaults to "<="
 		public var thresholdOperator:String;
 
-		// Area of largest path to be ignored
+		// Area of largest path to be ignored (in pixels)
+		// Defaults to 2
 		public var turdSize:int;
 
-		// Corner threshold
+		// Corner threshold, controls the smoothness of the curve.
+		// The useful range of this parameter is from 0 (polygon) to 1.3333 (no corners).
+		// Defaults to 1
 		public var alphaMax:Number;
 
-		// Use curve optimization
+		// Whether to optimize curves or not.
 		// Replace sequences of Bezier segments by a single segment when possible.
+		// Defaults to false
 		public var curveOptimizing:Boolean;
 
 		// Curve optimizing tolerance
+		// Larger values tend to decrease the number of segments, at the expense of less accuracy.
+		// The useful range is from 0 to infinty, although in practice one would hardly choose values greater than 1 or so.
+		// Defaults to 0.2
 		public var optTolerance:Number;
 	}
 }