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diff --git a/documentation/Nodes/RayMarching/RayMarch.md b/documentation/Nodes/RayMarching/RayMarch.md
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--- a/documentation/Nodes/RayMarching/RayMarch.md
+++ b/documentation/Nodes/RayMarching/RayMarch.md
@@ -1,5 +1,5 @@
# Ray March node
-A simple ray marcher.
+A simple ray marcher for primitive shapes.
**Controls**
@@ -23,21 +23,17 @@ A simple ray marcher.
|cube pos|vec3|SDBox|Position offset of the box shape|
|cube eulers|vec3|SDBox|Rotation of the box shape in Degrees|
|cube scale|vec3|SDBox|Scale of the box shape|
-|---|---|---|---|
|sphere pos|vec3|SDSphere|Position offset of the sphere shape|
|sphere eulers|vec3|SDSphere|Rotation of the box sphere in Degrees|
|sphere scale|vec3|SDSphere|Scale of the sphere shape|
-|---|---|---|---|
|capsule pos|vec3|SDCapsule|Position offset of the capsule shape|
|capsule eulers|vec3|SDCapsule|Rotation of the capsule shape in Degrees|
|capsule height|float|SDCapsule|Height of the capsule shape|
|capsule radius|float|SDCapsule|Radius of the capsule shape|
-|---|---|---|---|
|cylinder pos|vec3|SDCylinder|Position offset of the cylinder shape|
|cylinder eulers|vec3|SDCylinder|Rotation of the cylinder shape in Degrees|
|cylinder height|float|SDCylinder|Height of the cylinder shape|
|cylinder radius|float|SDCylinder|Radius of the cylinder shape|
-|---|---|---|---|
|torus pos|vec3|SDTorus|Position offset of the torus shape|
|torus eulers|vec3|SDTorus|Rotation of the torus shape in Degrees|
|torus small radius|float|SDTorus|Small radius of the torus shape|
@@ -47,4 +43,17 @@ A simple ray marcher.
|Name|Type|Binding|Description|
|---|---|---|---|
|distance|float|None|Ray intersection distance|
-___
\ No newline at end of file
+___
+
+
+**Extras**
+This node is only simple ray marching example, the true power of raymarching can only be achieved by custom SDFs. At the moment I am unable to inject the custom code via visual shaders, so I have provided the custom template at the following location.
+
+The default location can be found at
+`res://addons/ShaderLib/RayMarching/RayMarchCustom.gdshaderinc`
+
+You can copy the code from `RayMarchCustom.gdshaderinc` and then create a Global Expression/i> node and paste it in your visual shader.
+
+Lastly you also need to create an Expression/i> node, define required input and output parameters and call the custom ray marching function as below.
+
+___