This is a hardware-oriented case so they want to protect documents which include hardware designs, schematics, simulation models and results, reverse engineering and justifications for claims of infringement. Basically you are on the right track.... For bankruptcy purposes I think it's OK to hide technology info and focus on financial and business documentation and records. To my mind this should include internal communications, personal notes as well as external communications. Loosely you could consider schematics the equivalent of software source code.