Open GENIE is a much more detailed and powerful system than is obvious from the rest of this manual. You will read things in here that are described nowhere else and which may surprise you. You may have already discovered some of the power that can be gained from writing even very simple procedures to customize working environment.
Here are some of the things you can do (in increasing order of difficulty):
Object oriented command syntax - Write procedures in an OO fashion.
Advanced data types - Extend the data class system in Open GENIE.
Smalltalk - Code procedures directly in smalltalk for efficiency.
Extending GENIE - Wrinting in C++.