Read the users manual. Section 5 gives a simple example on how to setup the IGS. For examples of using the framework, see www.openeaagles.org. OpenEaagles contains ready made classes using the SubrScene SDK framework.
Documentation comes in several forms. For the framework, the C++ source class header files which is the primary interface to the framework is well commented. For the IGS the users manual located on the documents page of this web site.
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