Developing the Knowledge Base is the most fundamental, and thus the most important, step in developing TRIMS. For each area where I&I is impacted, a narrative must be written that describes the I&I issue, what can cause problems, and what can be done to avoid or mitigate the problems. As a simple example, in the Category of Electronics, a Template section might discuss Interference to include antenna placement, radar interference, high frequency AC considerations. Another section might consider power requirements, ambient temperature considerations, cooling requirements, and the like.
Each area in the Knowledge Base must be as complete as possible as this will provide the source of many of the Questions.
There are several methods for developing this set of narratives. An outline defining the individual areas would be one way. A context diagram, mentioned elsewhere, would be another.
Reference 2 is an excellent sample of the background of a Knowledge Base and how Templates are developed therefrom. The reference provides good examples of the narratives.