This Agreement may only be modified or modified by a written agreement signed by both parties. Additional documents attached to the confidentiality agreement should be labelled as “confidential” before being transmitted to another party. If you want to add more documents, write them down in the format below. Unlike information contained in patents and which is part of the public, trade secrets can be preserved in the long term. Trade secrets are exclusive and proprietary and distinguish a company from its competition. Today, at lunch, I gave you information about my kaleidoscopic projection system, especially how I set up the bulbs and wired them with the device. This information is confidential (as described in our confidentiality agreement) and this letter is intended to confirm disclosure.