diff --git a/Defining-custom-shaders.md b/Defining-custom-shaders.md
index 5a2d9e1..3d5e7cc 100644
--- a/Defining-custom-shaders.md
+++ b/Defining-custom-shaders.md
@@ -42,8 +42,6 @@ An example of a typical texture pack shader configuration is shown below:
         name: mytexturepackshader
         texturepack: my-favorite-texturepack-v2.1.zip
         biomeshaded: true
-        swampshaded: true
-        waterbiomeshaded: true
         better-grass: false
         grid-scale: 0
 
@@ -55,10 +53,6 @@ The settings for the TexturePackHDShader include:
 
 - _biomeshaded_ : This setting controls whether grass and leaves are colored based on raw biome data (temperature and rainfall).  If set to **true** (the default), biome-shading is enabled.  If set to **false**, all grass and leaves are shaded consistently, based on the averaged colors from the **misc/grasscolor.png** and **misc/foliagecolor.png#**files, respectively.
 
-- _swampshaded_ : This setting controls whether the darkening of the biome shaded colors for water, leaves and grass in swamp biomes should be applied.  The default is based on the _swampshaded_ attribute in **configuration.txt** (which defaults to true for 1.9.0 and later, false for 1.8.x).
-
-- _waterbiomeshaded_ : This setting controls whether water is toned based on biome temperature and rainfall data.  The default is based on the _waterbiomeshaded_ attribute in **configuration.txt** (which defaults to true for 1.9.0 and later, false for 1.8.x).
-
 - _better-grass_ : This setting controls the option to render the sides of grass and snow blocks as done by the BetterGrass client mod.  If not defined, the value for _better-grass_ set in **configuration.txt** applies (which defaults to false).
 
 - _grid-scale_ : This setting, if defined and greater that zero, will result in a grid being drawn on the map tiles, with a white row and column of blocks every N tiles (so _grid-scale: 16_ would result in a grid with whitened blocks on every chunk border).  Since the block color is changed, the grid will conform to the contour of the map.
@@ -88,5 +82,7 @@ The settings for the TopoHDShader include:
 
 - _watercolor_ : The #RRGGBB color to be used for any water blocks.  If defined, this color overrides the color that would otherwise be shown for blocks at the altitude (Y coordinate).  If not defined, water is rendered in the same way as any other block.
 
-- _colorN_ : For N is from 0 to 127, and corresponds to the Y coordinate.  Each value provided is an #RRGGBB color to be used for blocks with an altitude of N (Y=N).  By default, _color0_ is #000000 and _color255_ is #FFFFFF.  Any values not provided will be interpolated based on the two nearest values that are defined.
+- _colorN_ : For N is from 0 to 255, and corresponds to the Y coordinate.  Each value provided is an #RRGGBB color to be used for blocks with an altitude of N (Y=N).  By default, _color0_ is #000000 and _color255_ is #FFFFFF.  Any values not provided will be interpolated based on the two nearest values that are defined.
+
+- _hiddenids_ : Optional parameter, providing a list of block IDs to be hidden during generation of the topological map.  Default value is just air - [ 0 ].  Value should be list of comma separated numbers, enclosed with square brackets (e.g. "[ 6, 17, 18, 31, 32, 37, 38, 39, 40, 50, 55, 78, 81, 83, 86, 99, 100, 103, 104, 105, 111, 115 ]").