From Realsoft3D Wiki

Realsoft3D is extremely extensible and this extensibility is available to the user community. However, since the official documentation leaves a few things wanting, this section of the wiki will try to assist.


Currently Realsoft3D supports two scripting languages, RPL and Javascript. These are very different in structure, but in functionality they are equivalent. Note that RPL will be dropped from V6.


To make more advanced extensions, the Realsoft3D SDK provides a C library that allows any C-program to access and extend Realsoft3D functionality.