Interactive refers to a sequence of steps where each step is composed out of an action and a reaction.

These steps facilitate the synchronization of internal virtual time and external physical time by delaying each next step until the recorded/expected response has been perceived.

Object is related to OO but in DSS IGOR context it relates to a concept (Qualia) or sound or visual shape or sequence thereof.

These object are connected in a graph (tree-diagram) that relates to their spatial and chronological relative position.

Rendering is the encoding of shapes (recorded generalized templates) that correspond with a Qualia such that a human that interacts with a computer can also perceive the qualia.

So the rendering is the software equivalent of human-to-human interactions allowing conversational and instructive and explanatory modes for computer-to-human and human-to-computer dialog.

In other words, It allows a computer (by example) to show what the computer is thinking about.

This is very powerful as computers can manipulate (parse and generate) 3D VR and AR shapes with the same ease was we generate words in spoken language.