In the Project Preferences window, you can define new groups in the Import tab. A number of default channel groups and predefined assignments are provided. Groups can be added, renamed, removed, and channel mapping can be updated.
| Group | Mapping | 
|---|---|
| Alpha | A to A | 
| Colors | RGB to RGB | 
| Colors+Alpha | RGBA to RGBA | 
| Depth | Z to R | 
| Surface Normals | NX, NY and NZ to R, G and B | 
| Velocity | velX and velY to R and G | 

The selected group, Velocity, is predefined by Toxik. It defines a mapping of channels named velX and velY to output channel R and G respectively. No channels are mapped to B and A.
Under From File To Output are four fields labeled R, G, B, and A. Each contains all the channels available in the EXR file.

| Channel | Description | 
|---|---|
| R | Red Intensity | 
| G | Green Intensity | 
| A | Alpha Opacity | 
| U | Equivalent to X-axis in a 2D plane | 
| V | Equivalent to Y-axis in a 2D plane | 
| Z | Z-axis or depth in a 3D plane | 
| NX | X-axis Normals | 
| NY | Y-axis Normals | 
| NZ | Z-axis Normals | 
| materialID | A surfaces material ID is the value that determines which sub-material the surface will use when you apply a Multi/Sub-Object to a material to the object to which the material belongs. | 
| objectID | The value that determines which object will be used when you apply it to the object. | 
| velX | X-axis Motion Vector | 
| velY | Y-axis Motion Vector | 
| None | No channels selected |