| RslArg | An array of RslArg pointers is passed to the RSL plugin function | 
| RslArrayIter< T > | An iterator for array arguments | 
| RslContext | RslContext contains the grid data required to execute a shadeop | 
| RslFunction | Each plugin must define an RSL function table, which requires two steps | 
| RslFunctionTable | Each plugin should define an RslFunctionTable called "RslPublicFunctions" | 
| RslIter< T > | An iterator is used to access grid data | 
 1.4.6